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c82ee6d3 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
af36d7f0 JG |
3 | * libata-scsi.c - helper library for ATA |
4 | * | |
8c3d3d4b | 5 | * Maintained by: Tejun Heo <tj@kernel.org> |
af36d7f0 JG |
6 | * Please ALWAYS copy linux-ide@vger.kernel.org |
7 | * on emails. | |
8 | * | |
9 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. | |
10 | * Copyright 2003-2004 Jeff Garzik | |
11 | * | |
af36d7f0 | 12 | * libata documentation is available via 'make {ps|pdf}docs', |
9bb9a39c | 13 | * as Documentation/driver-api/libata.rst |
af36d7f0 JG |
14 | * |
15 | * Hardware documentation available from | |
16 | * - http://www.t10.org/ | |
17 | * - http://www.t13.org/ | |
1da177e4 LT |
18 | */ |
19 | ||
5a0e3ad6 | 20 | #include <linux/slab.h> |
1da177e4 LT |
21 | #include <linux/kernel.h> |
22 | #include <linux/blkdev.h> | |
23 | #include <linux/spinlock.h> | |
38789fda | 24 | #include <linux/export.h> |
1da177e4 | 25 | #include <scsi/scsi.h> |
1da177e4 | 26 | #include <scsi/scsi_host.h> |
beb40487 | 27 | #include <scsi/scsi_cmnd.h> |
85837ebd | 28 | #include <scsi/scsi_eh.h> |
005a5a06 | 29 | #include <scsi/scsi_device.h> |
a6e6ce8e | 30 | #include <scsi/scsi_tcq.h> |
30afc84c | 31 | #include <scsi/scsi_transport.h> |
1da177e4 | 32 | #include <linux/libata.h> |
b095518e | 33 | #include <linux/hdreg.h> |
2dcb407e | 34 | #include <linux/uaccess.h> |
2a6e58d2 | 35 | #include <linux/suspend.h> |
18f0f978 | 36 | #include <asm/unaligned.h> |
8e061784 | 37 | #include <linux/ioprio.h> |
1da177e4 LT |
38 | |
39 | #include "libata.h" | |
d9027470 | 40 | #include "libata-transport.h" |
1da177e4 | 41 | |
87340e98 TH |
42 | #define ATA_SCSI_RBUF_SIZE 4096 |
43 | ||
44 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | |
45 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | |
b095518e | 46 | |
ad706991 | 47 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
ab5b3a5b | 48 | |
2dcb407e | 49 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 50 | const struct scsi_device *scsidev); |
2dcb407e | 51 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 52 | const struct scsi_device *scsidev); |
1da177e4 | 53 | |
00ac37f5 DG |
54 | #define RW_RECOVERY_MPAGE 0x1 |
55 | #define RW_RECOVERY_MPAGE_LEN 12 | |
56 | #define CACHE_MPAGE 0x8 | |
57 | #define CACHE_MPAGE_LEN 20 | |
58 | #define CONTROL_MPAGE 0xa | |
59 | #define CONTROL_MPAGE_LEN 12 | |
60 | #define ALL_MPAGES 0x3f | |
61 | #define ALL_SUB_MPAGES 0xff | |
62 | ||
63 | ||
24f75686 | 64 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
65 | RW_RECOVERY_MPAGE, |
66 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 67 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
68 | 0, /* read retry count */ |
69 | 0, 0, 0, 0, | |
70 | 0, /* write retry count */ | |
71 | 0, 0, 0 | |
72 | }; | |
73 | ||
74 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
75 | CACHE_MPAGE, | |
76 | CACHE_MPAGE_LEN - 2, | |
77 | 0, /* contains WCE, needs to be 0 for logic */ | |
78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
79 | 0, /* contains DRA, needs to be 0 for logic */ | |
80 | 0, 0, 0, 0, 0, 0, 0 | |
81 | }; | |
82 | ||
83 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
84 | CONTROL_MPAGE, | |
85 | CONTROL_MPAGE_LEN - 2, | |
86 | 2, /* DSENSE=0, GLTSD=1 */ | |
87 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
88 | 0, 0, 0, 0, 0xff, 0xff, | |
89 | 0, 30 /* extended self test time, see 05-359r1 */ | |
90 | }; | |
91 | ||
c93b263e | 92 | static const char *ata_lpm_policy_names[] = { |
f4ac6476 HG |
93 | [ATA_LPM_UNKNOWN] = "max_performance", |
94 | [ATA_LPM_MAX_POWER] = "max_performance", | |
95 | [ATA_LPM_MED_POWER] = "medium_power", | |
96 | [ATA_LPM_MED_POWER_WITH_DIPM] = "med_power_with_dipm", | |
a5ec5a7b | 97 | [ATA_LPM_MIN_POWER_WITH_PARTIAL] = "min_power_with_partial", |
f4ac6476 | 98 | [ATA_LPM_MIN_POWER] = "min_power", |
ca77329f KCA |
99 | }; |
100 | ||
ecd75ad5 | 101 | static ssize_t ata_scsi_lpm_store(struct device *device, |
c93b263e TH |
102 | struct device_attribute *attr, |
103 | const char *buf, size_t count) | |
ca77329f | 104 | { |
ecd75ad5 | 105 | struct Scsi_Host *shost = class_to_shost(device); |
ca77329f | 106 | struct ata_port *ap = ata_shost_to_port(shost); |
ecd75ad5 TH |
107 | struct ata_link *link; |
108 | struct ata_device *dev; | |
c93b263e | 109 | enum ata_lpm_policy policy; |
6b7ae954 | 110 | unsigned long flags; |
c93b263e TH |
111 | |
112 | /* UNKNOWN is internal state, iterate from MAX_POWER */ | |
113 | for (policy = ATA_LPM_MAX_POWER; | |
114 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { | |
115 | const char *name = ata_lpm_policy_names[policy]; | |
116 | ||
117 | if (strncmp(name, buf, strlen(name)) == 0) | |
ca77329f | 118 | break; |
ca77329f | 119 | } |
c93b263e | 120 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
121 | return -EINVAL; |
122 | ||
6b7ae954 | 123 | spin_lock_irqsave(ap->lock, flags); |
ecd75ad5 TH |
124 | |
125 | ata_for_each_link(link, ap, EDGE) { | |
126 | ata_for_each_dev(dev, &ap->link, ENABLED) { | |
127 | if (dev->horkage & ATA_HORKAGE_NOLPM) { | |
128 | count = -EOPNOTSUPP; | |
129 | goto out_unlock; | |
130 | } | |
131 | } | |
132 | } | |
133 | ||
6b7ae954 TH |
134 | ap->target_lpm_policy = policy; |
135 | ata_port_schedule_eh(ap); | |
ecd75ad5 | 136 | out_unlock: |
6b7ae954 | 137 | spin_unlock_irqrestore(ap->lock, flags); |
ca77329f KCA |
138 | return count; |
139 | } | |
140 | ||
c93b263e TH |
141 | static ssize_t ata_scsi_lpm_show(struct device *dev, |
142 | struct device_attribute *attr, char *buf) | |
ca77329f | 143 | { |
ee959b00 | 144 | struct Scsi_Host *shost = class_to_shost(dev); |
ca77329f | 145 | struct ata_port *ap = ata_shost_to_port(shost); |
ca77329f | 146 | |
6b7ae954 | 147 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
148 | return -EINVAL; |
149 | ||
c93b263e | 150 | return snprintf(buf, PAGE_SIZE, "%s\n", |
6b7ae954 | 151 | ata_lpm_policy_names[ap->target_lpm_policy]); |
ca77329f | 152 | } |
ee959b00 | 153 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
c93b263e | 154 | ata_scsi_lpm_show, ata_scsi_lpm_store); |
ee959b00 | 155 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
ca77329f | 156 | |
45fabbb7 EO |
157 | static ssize_t ata_scsi_park_show(struct device *device, |
158 | struct device_attribute *attr, char *buf) | |
159 | { | |
160 | struct scsi_device *sdev = to_scsi_device(device); | |
161 | struct ata_port *ap; | |
162 | struct ata_link *link; | |
163 | struct ata_device *dev; | |
3948b6f2 | 164 | unsigned long now; |
45fabbb7 EO |
165 | unsigned int uninitialized_var(msecs); |
166 | int rc = 0; | |
167 | ||
168 | ap = ata_shost_to_port(sdev->host); | |
169 | ||
3948b6f2 | 170 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
171 | dev = ata_scsi_find_dev(ap, sdev); |
172 | if (!dev) { | |
173 | rc = -ENODEV; | |
174 | goto unlock; | |
175 | } | |
176 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
177 | rc = -EOPNOTSUPP; | |
178 | goto unlock; | |
179 | } | |
180 | ||
181 | link = dev->link; | |
a464189d | 182 | now = jiffies; |
45fabbb7 EO |
183 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
184 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
185 | time_after(dev->unpark_deadline, now)) |
186 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
187 | else |
188 | msecs = 0; | |
189 | ||
190 | unlock: | |
191 | spin_unlock_irq(ap->lock); | |
192 | ||
193 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); | |
194 | } | |
195 | ||
196 | static ssize_t ata_scsi_park_store(struct device *device, | |
197 | struct device_attribute *attr, | |
198 | const char *buf, size_t len) | |
199 | { | |
200 | struct scsi_device *sdev = to_scsi_device(device); | |
201 | struct ata_port *ap; | |
202 | struct ata_device *dev; | |
203 | long int input; | |
204 | unsigned long flags; | |
205 | int rc; | |
206 | ||
42b9ab7a JH |
207 | rc = kstrtol(buf, 10, &input); |
208 | if (rc) | |
209 | return rc; | |
210 | if (input < -2) | |
45fabbb7 EO |
211 | return -EINVAL; |
212 | if (input > ATA_TMOUT_MAX_PARK) { | |
213 | rc = -EOVERFLOW; | |
214 | input = ATA_TMOUT_MAX_PARK; | |
215 | } | |
216 | ||
217 | ap = ata_shost_to_port(sdev->host); | |
218 | ||
219 | spin_lock_irqsave(ap->lock, flags); | |
220 | dev = ata_scsi_find_dev(ap, sdev); | |
221 | if (unlikely(!dev)) { | |
222 | rc = -ENODEV; | |
223 | goto unlock; | |
224 | } | |
9162c657 HR |
225 | if (dev->class != ATA_DEV_ATA && |
226 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
227 | rc = -EOPNOTSUPP; |
228 | goto unlock; | |
229 | } | |
230 | ||
231 | if (input >= 0) { | |
232 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
233 | rc = -EOPNOTSUPP; | |
234 | goto unlock; | |
235 | } | |
236 | ||
237 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
238 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
239 | ata_port_schedule_eh(ap); | |
240 | complete(&ap->park_req_pending); | |
241 | } else { | |
242 | switch (input) { | |
243 | case -1: | |
244 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
245 | break; | |
246 | case -2: | |
247 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
248 | break; | |
249 | } | |
250 | } | |
251 | unlock: | |
252 | spin_unlock_irqrestore(ap->lock, flags); | |
253 | ||
254 | return rc ? rc : len; | |
255 | } | |
256 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
257 | ata_scsi_park_show, ata_scsi_park_store); | |
258 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
259 | ||
84f95243 | 260 | static ssize_t ata_ncq_prio_enable_show(struct device *device, |
9f56eca3 AM |
261 | struct device_attribute *attr, |
262 | char *buf) | |
84f95243 AM |
263 | { |
264 | struct scsi_device *sdev = to_scsi_device(device); | |
265 | struct ata_port *ap; | |
266 | struct ata_device *dev; | |
267 | bool ncq_prio_enable; | |
268 | int rc = 0; | |
269 | ||
270 | ap = ata_shost_to_port(sdev->host); | |
271 | ||
272 | spin_lock_irq(ap->lock); | |
273 | dev = ata_scsi_find_dev(ap, sdev); | |
274 | if (!dev) { | |
275 | rc = -ENODEV; | |
276 | goto unlock; | |
277 | } | |
278 | ||
279 | ncq_prio_enable = dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLE; | |
280 | ||
281 | unlock: | |
282 | spin_unlock_irq(ap->lock); | |
283 | ||
284 | return rc ? rc : snprintf(buf, 20, "%u\n", ncq_prio_enable); | |
285 | } | |
286 | ||
287 | static ssize_t ata_ncq_prio_enable_store(struct device *device, | |
288 | struct device_attribute *attr, | |
289 | const char *buf, size_t len) | |
290 | { | |
291 | struct scsi_device *sdev = to_scsi_device(device); | |
292 | struct ata_port *ap; | |
293 | struct ata_device *dev; | |
294 | long int input; | |
84f95243 AM |
295 | int rc; |
296 | ||
297 | rc = kstrtol(buf, 10, &input); | |
298 | if (rc) | |
299 | return rc; | |
300 | if ((input < 0) || (input > 1)) | |
301 | return -EINVAL; | |
302 | ||
303 | ap = ata_shost_to_port(sdev->host); | |
84f95243 | 304 | dev = ata_scsi_find_dev(ap, sdev); |
9f56eca3 AM |
305 | if (unlikely(!dev)) |
306 | return -ENODEV; | |
307 | ||
308 | spin_lock_irq(ap->lock); | |
309 | if (input) | |
310 | dev->flags |= ATA_DFLAG_NCQ_PRIO_ENABLE; | |
311 | else | |
312 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE; | |
313 | ||
314 | dev->link->eh_info.action |= ATA_EH_REVALIDATE; | |
315 | dev->link->eh_info.flags |= ATA_EHI_QUIET; | |
316 | ata_port_schedule_eh(ap); | |
317 | spin_unlock_irq(ap->lock); | |
318 | ||
319 | ata_port_wait_eh(ap); | |
84f95243 | 320 | |
4e647d96 | 321 | if (input) { |
9f56eca3 | 322 | spin_lock_irq(ap->lock); |
4e647d96 | 323 | if (!(dev->flags & ATA_DFLAG_NCQ_PRIO)) { |
9f56eca3 AM |
324 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE; |
325 | rc = -EIO; | |
4e647d96 | 326 | } |
9f56eca3 | 327 | spin_unlock_irq(ap->lock); |
4e647d96 | 328 | } |
84f95243 | 329 | |
84f95243 AM |
330 | return rc ? rc : len; |
331 | } | |
332 | ||
333 | DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR, | |
334 | ata_ncq_prio_enable_show, ata_ncq_prio_enable_store); | |
335 | EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_enable); | |
336 | ||
06dbde5f HR |
337 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
338 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 339 | { |
06dbde5f HR |
340 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
341 | ||
5b01e4b9 HR |
342 | if (!cmd) |
343 | return; | |
344 | ||
f0761be3 TH |
345 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
346 | ||
06dbde5f | 347 | scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq); |
f0761be3 TH |
348 | } |
349 | ||
492bf621 HR |
350 | void ata_scsi_set_sense_information(struct ata_device *dev, |
351 | struct scsi_cmnd *cmd, | |
352 | const struct ata_taskfile *tf) | |
353 | { | |
354 | u64 information; | |
355 | ||
356 | if (!cmd) | |
357 | return; | |
358 | ||
359 | information = ata_tf_read_block(tf, dev); | |
360 | if (information == U64_MAX) | |
361 | return; | |
362 | ||
363 | scsi_set_sense_information(cmd->sense_buffer, | |
364 | SCSI_SENSE_BUFFERSIZE, information); | |
365 | } | |
366 | ||
bcfc867d | 367 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 368 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
369 | { |
370 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 371 | /* "Invalid field in CDB" */ |
bcfc867d | 372 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 373 | field, bit, 1); |
bcfc867d HR |
374 | } |
375 | ||
7780081c HR |
376 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
377 | struct scsi_cmnd *cmd, u16 field) | |
378 | { | |
379 | /* "Invalid field in parameter list" */ | |
380 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
381 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
382 | field, 0xff, 0); | |
f0761be3 TH |
383 | } |
384 | ||
18f7ba4c KCA |
385 | static ssize_t |
386 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, | |
387 | const char *buf, size_t count) | |
388 | { | |
389 | struct Scsi_Host *shost = class_to_shost(dev); | |
390 | struct ata_port *ap = ata_shost_to_port(shost); | |
391 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) | |
392 | return ap->ops->em_store(ap, buf, count); | |
393 | return -EINVAL; | |
394 | } | |
395 | ||
396 | static ssize_t | |
397 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, | |
398 | char *buf) | |
399 | { | |
400 | struct Scsi_Host *shost = class_to_shost(dev); | |
401 | struct ata_port *ap = ata_shost_to_port(shost); | |
402 | ||
403 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) | |
404 | return ap->ops->em_show(ap, buf); | |
405 | return -EINVAL; | |
406 | } | |
ea7a5ed5 | 407 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, |
18f7ba4c KCA |
408 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
409 | EXPORT_SYMBOL_GPL(dev_attr_em_message); | |
410 | ||
411 | static ssize_t | |
412 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, | |
413 | char *buf) | |
414 | { | |
415 | struct Scsi_Host *shost = class_to_shost(dev); | |
416 | struct ata_port *ap = ata_shost_to_port(shost); | |
417 | ||
418 | return snprintf(buf, 23, "%d\n", ap->em_message_type); | |
419 | } | |
420 | DEVICE_ATTR(em_message_type, S_IRUGO, | |
421 | ata_scsi_em_message_type_show, NULL); | |
422 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); | |
423 | ||
424 | static ssize_t | |
425 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, | |
426 | char *buf) | |
427 | { | |
428 | struct scsi_device *sdev = to_scsi_device(dev); | |
429 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
430 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
431 | ||
26cd4d65 XF |
432 | if (atadev && ap->ops->sw_activity_show && |
433 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) | |
18f7ba4c KCA |
434 | return ap->ops->sw_activity_show(atadev, buf); |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | static ssize_t | |
439 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, | |
440 | const char *buf, size_t count) | |
441 | { | |
442 | struct scsi_device *sdev = to_scsi_device(dev); | |
443 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
444 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
445 | enum sw_activity val; | |
446 | int rc; | |
447 | ||
26cd4d65 XF |
448 | if (atadev && ap->ops->sw_activity_store && |
449 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) { | |
18f7ba4c KCA |
450 | val = simple_strtoul(buf, NULL, 0); |
451 | switch (val) { | |
452 | case OFF: case BLINK_ON: case BLINK_OFF: | |
453 | rc = ap->ops->sw_activity_store(atadev, val); | |
454 | if (!rc) | |
455 | return count; | |
456 | else | |
457 | return rc; | |
458 | } | |
459 | } | |
460 | return -EINVAL; | |
461 | } | |
ea7a5ed5 | 462 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, |
18f7ba4c KCA |
463 | ata_scsi_activity_store); |
464 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); | |
465 | ||
45fabbb7 EO |
466 | struct device_attribute *ata_common_sdev_attrs[] = { |
467 | &dev_attr_unload_heads, | |
84f95243 | 468 | &dev_attr_ncq_prio_enable, |
45fabbb7 EO |
469 | NULL |
470 | }; | |
471 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); | |
472 | ||
1da177e4 LT |
473 | /** |
474 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
475 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
476 | * @bdev: block device associated with @sdev | |
477 | * @capacity: capacity of SCSI device | |
478 | * @geom: location to which geometry will be output | |
479 | * | |
480 | * Generic bios head/sector/cylinder calculator | |
481 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
482 | * mapping. Some situations may arise where the disk is not | |
483 | * bootable if this is not used. | |
484 | * | |
485 | * LOCKING: | |
486 | * Defined by the SCSI layer. We don't really care. | |
487 | * | |
488 | * RETURNS: | |
489 | * Zero. | |
490 | */ | |
491 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
492 | sector_t capacity, int geom[]) | |
493 | { | |
494 | geom[0] = 255; | |
495 | geom[1] = 63; | |
496 | sector_div(capacity, 255*63); | |
497 | geom[2] = capacity; | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
d8d9129e TH |
502 | /** |
503 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
504 | * @sdev: SCSI device to adjust device capacity for | |
505 | * | |
506 | * This function is called if a partition on @sdev extends beyond | |
507 | * the end of the device. It requests EH to unlock HPA. | |
508 | * | |
509 | * LOCKING: | |
510 | * Defined by the SCSI layer. Might sleep. | |
511 | */ | |
512 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
513 | { | |
514 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
515 | struct ata_device *dev; | |
516 | unsigned long flags; | |
517 | ||
518 | spin_lock_irqsave(ap->lock, flags); | |
519 | ||
520 | dev = ata_scsi_find_dev(ap, sdev); | |
521 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
522 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
523 | dev->link->eh_info.action |= ATA_EH_RESET; | |
524 | ata_port_schedule_eh(ap); | |
525 | } | |
526 | ||
527 | spin_unlock_irqrestore(ap->lock, flags); | |
528 | ata_port_wait_eh(ap); | |
529 | } | |
530 | ||
5924b74c TH |
531 | /** |
532 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 533 | * @ap: target port |
5924b74c TH |
534 | * @sdev: SCSI device to get identify data for |
535 | * @arg: User buffer area for identify data | |
536 | * | |
537 | * LOCKING: | |
538 | * Defined by the SCSI layer. We don't really care. | |
539 | * | |
540 | * RETURNS: | |
541 | * Zero on success, negative errno on error. | |
542 | */ | |
94be9a58 JG |
543 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
544 | void __user *arg) | |
5924b74c | 545 | { |
5924b74c TH |
546 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
547 | u16 __user *dst = arg; | |
548 | char buf[40]; | |
549 | ||
550 | if (!dev) | |
551 | return -ENOMSG; | |
552 | ||
553 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
554 | return -EFAULT; | |
555 | ||
556 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
557 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
558 | return -EFAULT; | |
559 | ||
560 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
561 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
562 | return -EFAULT; | |
563 | ||
564 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
565 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
566 | return -EFAULT; | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
b095518e JG |
571 | /** |
572 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 573 | * @scsidev: Device to which we are issuing command |
b095518e JG |
574 | * @arg: User provided data for issuing command |
575 | * | |
576 | * LOCKING: | |
577 | * Defined by the SCSI layer. We don't really care. | |
578 | * | |
579 | * RETURNS: | |
580 | * Zero on success, negative errno on error. | |
581 | */ | |
b095518e JG |
582 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
583 | { | |
584 | int rc = 0; | |
429296cc | 585 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 586 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 587 | u8 args[4], *argbuf = NULL; |
b095518e | 588 | int argsize = 0; |
85837ebd | 589 | enum dma_data_direction data_dir; |
76aaf87b | 590 | struct scsi_sense_hdr sshdr; |
bbe1fe7e | 591 | int cmd_result; |
b095518e | 592 | |
c893a3ae | 593 | if (arg == NULL) |
b095518e JG |
594 | return -EINVAL; |
595 | ||
596 | if (copy_from_user(args, arg, sizeof(args))) | |
597 | return -EFAULT; | |
598 | ||
429296cc | 599 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
600 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
601 | ||
602 | if (args[3]) { | |
295124dc | 603 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 604 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
605 | if (argbuf == NULL) { |
606 | rc = -ENOMEM; | |
607 | goto error; | |
608 | } | |
b095518e JG |
609 | |
610 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
611 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 612 | block count in sector count field */ |
85837ebd | 613 | data_dir = DMA_FROM_DEVICE; |
b095518e JG |
614 | } else { |
615 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 616 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
85837ebd | 617 | data_dir = DMA_NONE; |
b095518e JG |
618 | } |
619 | ||
620 | scsi_cmd[0] = ATA_16; | |
621 | ||
622 | scsi_cmd[4] = args[2]; | |
a4f19040 | 623 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
624 | scsi_cmd[6] = args[3]; |
625 | scsi_cmd[8] = args[1]; | |
f355eece LW |
626 | scsi_cmd[10] = ATA_SMART_LBAM_PASS; |
627 | scsi_cmd[12] = ATA_SMART_LBAH_PASS; | |
b095518e JG |
628 | } else { |
629 | scsi_cmd[6] = args[1]; | |
630 | } | |
631 | scsi_cmd[14] = args[0]; | |
632 | ||
633 | /* Good values for timeout and retries? Values below | |
634 | from scsi_ioctl_send_command() for default case... */ | |
bbe1fe7e | 635 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
76aaf87b | 636 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
bbe1fe7e ET |
637 | |
638 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
639 | u8 *desc = sensebuf + 8; | |
640 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
641 | ||
642 | /* If we set cc then ATA pass-through will cause a | |
643 | * check condition even if no error. Filter that. */ | |
644 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
645 | if (sshdr.sense_key == RECOVERED_ERROR && |
646 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
647 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
648 | } | |
649 | ||
650 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
651 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
652 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
653 | args[0] = desc[13]; /* status */ | |
654 | args[1] = desc[3]; /* error */ | |
655 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
656 | if (copy_to_user(arg, args, sizeof(args))) |
657 | rc = -EFAULT; | |
658 | } | |
659 | } | |
660 | ||
661 | ||
662 | if (cmd_result) { | |
b095518e JG |
663 | rc = -EIO; |
664 | goto error; | |
665 | } | |
666 | ||
b095518e | 667 | if ((argbuf) |
c893a3ae | 668 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
669 | rc = -EFAULT; |
670 | error: | |
8f760780 | 671 | kfree(argbuf); |
b095518e JG |
672 | return rc; |
673 | } | |
674 | ||
675 | /** | |
676 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 677 | * @scsidev: Device to which we are issuing command |
b095518e JG |
678 | * @arg: User provided data for issuing command |
679 | * | |
680 | * LOCKING: | |
681 | * Defined by the SCSI layer. We don't really care. | |
682 | * | |
683 | * RETURNS: | |
684 | * Zero on success, negative errno on error. | |
685 | */ | |
686 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
687 | { | |
688 | int rc = 0; | |
429296cc | 689 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 690 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 691 | u8 args[7]; |
76aaf87b | 692 | struct scsi_sense_hdr sshdr; |
af068bd1 | 693 | int cmd_result; |
b095518e | 694 | |
c893a3ae | 695 | if (arg == NULL) |
b095518e JG |
696 | return -EINVAL; |
697 | ||
698 | if (copy_from_user(args, arg, sizeof(args))) | |
699 | return -EFAULT; | |
700 | ||
429296cc | 701 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
702 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
703 | scsi_cmd[0] = ATA_16; | |
704 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 705 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
706 | scsi_cmd[4] = args[1]; |
707 | scsi_cmd[6] = args[2]; | |
708 | scsi_cmd[8] = args[3]; | |
709 | scsi_cmd[10] = args[4]; | |
710 | scsi_cmd[12] = args[5]; | |
277239f2 | 711 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
712 | scsi_cmd[14] = args[0]; |
713 | ||
b095518e | 714 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 715 | from scsi_ioctl_send_command() for default case... */ |
af068bd1 | 716 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
76aaf87b | 717 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
af068bd1 DM |
718 | |
719 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
720 | u8 *desc = sensebuf + 8; | |
721 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
722 | ||
723 | /* If we set cc then ATA pass-through will cause a | |
724 | * check condition even if no error. Filter that. */ | |
725 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
726 | if (sshdr.sense_key == RECOVERED_ERROR && |
727 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
728 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
729 | } | |
730 | ||
731 | /* Send userspace ATA registers */ | |
732 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
733 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
734 | args[0] = desc[13]; /* status */ | |
735 | args[1] = desc[3]; /* error */ | |
736 | args[2] = desc[5]; /* sector count (0:7) */ | |
737 | args[3] = desc[7]; /* lbal */ | |
738 | args[4] = desc[9]; /* lbam */ | |
739 | args[5] = desc[11]; /* lbah */ | |
740 | args[6] = desc[12]; /* select */ | |
741 | if (copy_to_user(arg, args, sizeof(args))) | |
742 | rc = -EFAULT; | |
743 | } | |
744 | } | |
745 | ||
746 | if (cmd_result) { | |
b095518e | 747 | rc = -EIO; |
af068bd1 DM |
748 | goto error; |
749 | } | |
b095518e | 750 | |
af068bd1 | 751 | error: |
b095518e JG |
752 | return rc; |
753 | } | |
754 | ||
e3cf95dd AC |
755 | static int ata_ioc32(struct ata_port *ap) |
756 | { | |
757 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
758 | return 1; | |
759 | if (ap->pflags & ATA_PFLAG_PIO32) | |
760 | return 1; | |
761 | return 0; | |
762 | } | |
763 | ||
94be9a58 | 764 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
6f4e626f | 765 | unsigned int cmd, void __user *arg) |
1da177e4 | 766 | { |
287e6611 AB |
767 | unsigned long val; |
768 | int rc = -EINVAL; | |
e3cf95dd | 769 | unsigned long flags; |
1da177e4 | 770 | |
1da177e4 | 771 | switch (cmd) { |
287e6611 | 772 | case HDIO_GET_32BIT: |
e3cf95dd AC |
773 | spin_lock_irqsave(ap->lock, flags); |
774 | val = ata_ioc32(ap); | |
775 | spin_unlock_irqrestore(ap->lock, flags); | |
287e6611 | 776 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 777 | |
287e6611 | 778 | case HDIO_SET_32BIT: |
1da177e4 | 779 | val = (unsigned long) arg; |
e3cf95dd AC |
780 | rc = 0; |
781 | spin_lock_irqsave(ap->lock, flags); | |
782 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
783 | if (val) | |
784 | ap->pflags |= ATA_PFLAG_PIO32; | |
785 | else | |
786 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
787 | } else { | |
788 | if (val != ata_ioc32(ap)) | |
789 | rc = -EINVAL; | |
790 | } | |
791 | spin_unlock_irqrestore(ap->lock, flags); | |
792 | return rc; | |
1da177e4 | 793 | |
5924b74c | 794 | case HDIO_GET_IDENTITY: |
94be9a58 | 795 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 796 | |
b095518e JG |
797 | case HDIO_DRIVE_CMD: |
798 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
799 | return -EACCES; | |
800 | return ata_cmd_ioctl(scsidev, arg); | |
801 | ||
802 | case HDIO_DRIVE_TASK: | |
803 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
804 | return -EACCES; | |
805 | return ata_task_ioctl(scsidev, arg); | |
806 | ||
1da177e4 LT |
807 | default: |
808 | rc = -ENOTTY; | |
809 | break; | |
810 | } | |
811 | ||
1da177e4 LT |
812 | return rc; |
813 | } | |
94be9a58 JG |
814 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
815 | ||
6f4e626f NC |
816 | int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd, |
817 | void __user *arg) | |
94be9a58 JG |
818 | { |
819 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
820 | scsidev, cmd, arg); | |
821 | } | |
822 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
823 | |
824 | /** | |
825 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
826 | * @dev: ATA device to which the new command is attached |
827 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
828 | * |
829 | * Obtain a reference to an unused ata_queued_cmd structure, | |
830 | * which is the basic libata structure representing a single | |
831 | * ATA command sent to the hardware. | |
832 | * | |
833 | * If a command was available, fill in the SCSI-specific | |
834 | * portions of the structure with information on the | |
835 | * current command. | |
836 | * | |
837 | * LOCKING: | |
cca3974e | 838 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
839 | * |
840 | * RETURNS: | |
841 | * Command allocated, or %NULL if none available. | |
842 | */ | |
7102d230 | 843 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 844 | struct scsi_cmnd *cmd) |
1da177e4 LT |
845 | { |
846 | struct ata_queued_cmd *qc; | |
847 | ||
12cb5ce1 | 848 | qc = ata_qc_new_init(dev, cmd->request->tag); |
1da177e4 LT |
849 | if (qc) { |
850 | qc->scsicmd = cmd; | |
b27dcfb0 | 851 | qc->scsidone = cmd->scsi_done; |
1da177e4 | 852 | |
ff2aeb1e | 853 | qc->sg = scsi_sglist(cmd); |
7120165c | 854 | qc->n_elem = scsi_sg_count(cmd); |
7eb49509 DLM |
855 | |
856 | if (cmd->request->rq_flags & RQF_QUIET) | |
857 | qc->flags |= ATA_QCFLAG_QUIET; | |
1da177e4 LT |
858 | } else { |
859 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); | |
b27dcfb0 | 860 | cmd->scsi_done(cmd); |
1da177e4 LT |
861 | } |
862 | ||
863 | return qc; | |
864 | } | |
865 | ||
aacda375 TH |
866 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
867 | { | |
868 | struct scsi_cmnd *scmd = qc->scsicmd; | |
869 | ||
870 | qc->extrabytes = scmd->request->extra_len; | |
871 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; | |
872 | } | |
873 | ||
b095518e JG |
874 | /** |
875 | * ata_dump_status - user friendly display of error info | |
876 | * @id: id of the port in question | |
877 | * @tf: ptr to filled out taskfile | |
878 | * | |
879 | * Decode and dump the ATA error/status registers for the user so | |
880 | * that they have some idea what really happened at the non | |
881 | * make-believe layer. | |
882 | * | |
883 | * LOCKING: | |
884 | * inherited from caller | |
885 | */ | |
7102d230 | 886 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
b095518e JG |
887 | { |
888 | u8 stat = tf->command, err = tf->feature; | |
889 | ||
6ef56325 | 890 | pr_warn("ata%u: status=0x%02x { ", id, stat); |
b095518e | 891 | if (stat & ATA_BUSY) { |
6ef56325 | 892 | pr_cont("Busy }\n"); /* Data is not valid in this case */ |
b095518e | 893 | } else { |
6ef56325 JP |
894 | if (stat & ATA_DRDY) pr_cont("DriveReady "); |
895 | if (stat & ATA_DF) pr_cont("DeviceFault "); | |
896 | if (stat & ATA_DSC) pr_cont("SeekComplete "); | |
897 | if (stat & ATA_DRQ) pr_cont("DataRequest "); | |
898 | if (stat & ATA_CORR) pr_cont("CorrectedError "); | |
899 | if (stat & ATA_SENSE) pr_cont("Sense "); | |
900 | if (stat & ATA_ERR) pr_cont("Error "); | |
901 | pr_cont("}\n"); | |
b095518e JG |
902 | |
903 | if (err) { | |
6ef56325 JP |
904 | pr_warn("ata%u: error=0x%02x { ", id, err); |
905 | if (err & ATA_ABORTED) pr_cont("DriveStatusError "); | |
1308d7f0 HR |
906 | if (err & ATA_ICRC) { |
907 | if (err & ATA_ABORTED) | |
6ef56325 JP |
908 | pr_cont("BadCRC "); |
909 | else pr_cont("Sector "); | |
b095518e | 910 | } |
6ef56325 JP |
911 | if (err & ATA_UNC) pr_cont("UncorrectableError "); |
912 | if (err & ATA_IDNF) pr_cont("SectorIdNotFound "); | |
913 | if (err & ATA_TRK0NF) pr_cont("TrackZeroNotFound "); | |
914 | if (err & ATA_AMNF) pr_cont("AddrMarkNotFound "); | |
915 | pr_cont("}\n"); | |
b095518e JG |
916 | } |
917 | } | |
918 | } | |
919 | ||
1da177e4 LT |
920 | /** |
921 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 922 | * @id: ATA device number |
1da177e4 | 923 | * @drv_stat: value contained in ATA status register |
b095518e JG |
924 | * @drv_err: value contained in ATA error register |
925 | * @sk: the sense key we'll fill out | |
926 | * @asc: the additional sense code we'll fill out | |
927 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 928 | * @verbose: be verbose |
1da177e4 | 929 | * |
b095518e JG |
930 | * Converts an ATA error into a SCSI error. Fill out pointers to |
931 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
932 | * format sense blocks. | |
1da177e4 LT |
933 | * |
934 | * LOCKING: | |
cca3974e | 935 | * spin_lock_irqsave(host lock) |
1da177e4 | 936 | */ |
7102d230 AB |
937 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
938 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 939 | { |
b095518e | 940 | int i; |
ffe75ef6 | 941 | |
1da177e4 | 942 | /* Based on the 3ware driver translation table */ |
98ac62de | 943 | static const unsigned char sense_table[][4] = { |
1da177e4 | 944 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
945 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
946 | // Device busy Aborted command | |
1da177e4 | 947 | /* BBD|ECC|ID */ |
8ae72044 HR |
948 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
949 | // Device busy Aborted command | |
1da177e4 | 950 | /* ECC|MC|MARK */ |
8ae72044 HR |
951 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
952 | // Device fault Hardware error | |
1da177e4 | 953 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
954 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
955 | // Data CRC error SCSI parity error | |
1da177e4 | 956 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
957 | {0x37, NOT_READY, 0x04, 0x00}, |
958 | // Unit offline Not ready | |
1da177e4 | 959 | /* MCR|MARK */ |
8ae72044 HR |
960 | {0x09, NOT_READY, 0x04, 0x00}, |
961 | // Unrecovered disk error Not ready | |
1da177e4 | 962 | /* Bad address mark */ |
8ae72044 HR |
963 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
964 | // Address mark not found for data field | |
965 | /* TRK0 - Track 0 not found */ | |
966 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
967 | // Hardware error | |
78062c50 | 968 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 969 | /* Media change request */ |
8ae72044 HR |
970 | {0x08, NOT_READY, 0x04, 0x00}, |
971 | // FIXME: faking offline | |
972 | /* SRV/IDNF - ID not found */ | |
973 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
974 | // Logical address out of range | |
975 | /* MC - Media Changed */ | |
976 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
977 | // Not ready to ready change, medium may have changed | |
978 | /* ECC - Uncorrectable ECC error */ | |
979 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
980 | // Unrecovered read error | |
1da177e4 | 981 | /* BBD - block marked bad */ |
8ae72044 HR |
982 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
983 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
984 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
985 | }; | |
98ac62de | 986 | static const unsigned char stat_table[][4] = { |
1da177e4 | 987 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
988 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
989 | // Busy, fake parity for now | |
990 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
991 | // Device ready, unaligned write command | |
992 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
993 | // Device fault, internal target failure | |
994 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
995 | // Timed out in xfer, fake parity for now | |
996 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
997 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
998 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
999 | }; | |
1da177e4 | 1000 | |
1da177e4 LT |
1001 | /* |
1002 | * Is this an error we can process/parse | |
1003 | */ | |
b095518e JG |
1004 | if (drv_stat & ATA_BUSY) { |
1005 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 1006 | } |
b095518e JG |
1007 | |
1008 | if (drv_err) { | |
1009 | /* Look for drv_err */ | |
1010 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
1011 | /* Look for best matches first */ | |
2e9edbf8 | 1012 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
1013 | sense_table[i][0]) { |
1014 | *sk = sense_table[i][1]; | |
1015 | *asc = sense_table[i][2]; | |
1016 | *ascq = sense_table[i][3]; | |
1017 | goto translate_done; | |
1018 | } | |
1019 | } | |
1da177e4 | 1020 | } |
b095518e | 1021 | |
78062c50 GG |
1022 | /* |
1023 | * Fall back to interpreting status bits. Note that if the drv_err | |
1024 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
1025 | * is not descriptive enough. | |
1026 | */ | |
b095518e JG |
1027 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
1028 | if (stat_table[i][0] & drv_stat) { | |
1029 | *sk = stat_table[i][1]; | |
1030 | *asc = stat_table[i][2]; | |
1031 | *ascq = stat_table[i][3]; | |
1032 | goto translate_done; | |
1da177e4 | 1033 | } |
b095518e | 1034 | } |
b095518e | 1035 | |
78062c50 GG |
1036 | /* |
1037 | * We need a sensible error return here, which is tricky, and one | |
1038 | * that won't cause people to do things like return a disk wrongly. | |
1039 | */ | |
2d202024 AC |
1040 | *sk = ABORTED_COMMAND; |
1041 | *asc = 0x00; | |
1042 | *ascq = 0x00; | |
b095518e JG |
1043 | |
1044 | translate_done: | |
246619da | 1045 | if (verbose) |
6ef56325 | 1046 | pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
246619da | 1047 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
b095518e JG |
1048 | return; |
1049 | } | |
1050 | ||
1051 | /* | |
750426aa | 1052 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
1053 | * @qc: Command that completed. |
1054 | * | |
1055 | * This function is specific to the ATA descriptor format sense | |
1056 | * block specified for the ATA pass through commands. Regardless | |
1057 | * of whether the command errored or not, return a sense | |
1058 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
1059 | * block. If there was no error, we get the request from an ATA |
1060 | * passthrough command, so we use the following sense data: | |
1061 | * sk = RECOVERED ERROR | |
1062 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
1063 | * | |
b095518e JG |
1064 | * |
1065 | * LOCKING: | |
750426aa | 1066 | * None. |
b095518e | 1067 | */ |
750426aa | 1068 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
1069 | { |
1070 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 1071 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
1072 | unsigned char *sb = cmd->sense_buffer; |
1073 | unsigned char *desc = sb + 8; | |
246619da | 1074 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 1075 | u8 sense_key, asc, ascq; |
b095518e JG |
1076 | |
1077 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1078 | ||
0e5dec47 | 1079 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1080 | |
b095518e JG |
1081 | /* |
1082 | * Use ata_to_sense_error() to map status register bits | |
1083 | * onto sense key, asc & ascq. | |
1084 | */ | |
058e55e1 TH |
1085 | if (qc->err_mask || |
1086 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1087 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1088 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1089 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 1090 | } else { |
11093cb1 HR |
1091 | /* |
1092 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
1093 | * Always in descriptor format sense. | |
1094 | */ | |
1095 | scsi_build_sense_buffer(1, cmd->sense_buffer, | |
1096 | RECOVERED_ERROR, 0, 0x1D); | |
1da177e4 LT |
1097 | } |
1098 | ||
11093cb1 HR |
1099 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
1100 | u8 len; | |
1101 | ||
1102 | /* descriptor format */ | |
1103 | len = sb[7]; | |
1104 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
1105 | if (!desc) { | |
1106 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
1107 | return; | |
1108 | sb[7] = len + 14; | |
1109 | desc = sb + 8 + len; | |
1110 | } | |
1111 | desc[0] = 9; | |
1112 | desc[1] = 12; | |
1113 | /* | |
1114 | * Copy registers into sense buffer. | |
1115 | */ | |
1116 | desc[2] = 0x00; | |
1117 | desc[3] = tf->feature; /* == error reg */ | |
1118 | desc[5] = tf->nsect; | |
1119 | desc[7] = tf->lbal; | |
1120 | desc[9] = tf->lbam; | |
1121 | desc[11] = tf->lbah; | |
1122 | desc[12] = tf->device; | |
1123 | desc[13] = tf->command; /* == status reg */ | |
b095518e | 1124 | |
11093cb1 HR |
1125 | /* |
1126 | * Fill in Extend bit, and the high order bytes | |
1127 | * if applicable. | |
1128 | */ | |
1129 | if (tf->flags & ATA_TFLAG_LBA48) { | |
1130 | desc[2] |= 0x01; | |
1131 | desc[4] = tf->hob_nsect; | |
1132 | desc[6] = tf->hob_lbal; | |
1133 | desc[8] = tf->hob_lbam; | |
1134 | desc[10] = tf->hob_lbah; | |
1135 | } | |
1136 | } else { | |
1137 | /* Fixed sense format */ | |
1138 | desc[0] = tf->feature; | |
1139 | desc[1] = tf->command; /* status */ | |
1140 | desc[2] = tf->device; | |
1141 | desc[3] = tf->nsect; | |
e0029dcb | 1142 | desc[7] = 0; |
11093cb1 HR |
1143 | if (tf->flags & ATA_TFLAG_LBA48) { |
1144 | desc[8] |= 0x80; | |
1145 | if (tf->hob_nsect) | |
1146 | desc[8] |= 0x40; | |
1147 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
1148 | desc[8] |= 0x20; | |
1149 | } | |
1150 | desc[9] = tf->lbal; | |
1151 | desc[10] = tf->lbam; | |
1152 | desc[11] = tf->lbah; | |
1da177e4 | 1153 | } |
b095518e | 1154 | } |
1da177e4 | 1155 | |
b095518e | 1156 | /** |
750426aa | 1157 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
1158 | * @qc: Command that we are erroring out |
1159 | * | |
d25614ba | 1160 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 1161 | * format is used to accommodate LBA48 block address. |
b095518e JG |
1162 | * |
1163 | * LOCKING: | |
750426aa | 1164 | * None. |
b095518e | 1165 | */ |
750426aa | 1166 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 1167 | { |
d25614ba | 1168 | struct ata_device *dev = qc->dev; |
b095518e | 1169 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 1170 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 1171 | unsigned char *sb = cmd->sense_buffer; |
246619da | 1172 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 1173 | u64 block; |
b525e773 | 1174 | u8 sense_key, asc, ascq; |
b095518e JG |
1175 | |
1176 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1177 | ||
0e5dec47 | 1178 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1179 | |
59f68474 HR |
1180 | if (ata_dev_disabled(dev)) { |
1181 | /* Device disabled after error recovery */ | |
1182 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
1183 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
1184 | return; | |
1185 | } | |
d25614ba | 1186 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
1187 | * onto sense key, asc & ascq. |
1188 | */ | |
058e55e1 TH |
1189 | if (qc->err_mask || |
1190 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1191 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1192 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1193 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
1194 | } else { |
1195 | /* Could not decode error */ | |
1196 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
1197 | tf->command, qc->err_mask); | |
06dbde5f | 1198 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 1199 | return; |
1da177e4 | 1200 | } |
1da177e4 | 1201 | |
d25614ba | 1202 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
1203 | if (block == U64_MAX) |
1204 | return; | |
a7dac447 | 1205 | |
cf8b49b0 | 1206 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
1207 | } |
1208 | ||
a6cce2a7 BK |
1209 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
1210 | { | |
1211 | sdev->use_10_for_rw = 1; | |
1212 | sdev->use_10_for_ms = 1; | |
e185934f | 1213 | sdev->no_write_same = 1; |
31cc23b3 TH |
1214 | |
1215 | /* Schedule policy is determined by ->qc_defer() callback and | |
1216 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
1217 | * prevent SCSI midlayer from automatically deferring | |
1218 | * requests. | |
1219 | */ | |
1220 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1221 | } |
1222 | ||
fa2fc7f4 JB |
1223 | /** |
1224 | * atapi_drain_needed - Check whether data transfer may overflow | |
73fd8b6d | 1225 | * @rq: request to be checked |
fa2fc7f4 JB |
1226 | * |
1227 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1228 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1229 | * function checks whether overflow should be drained and ignored |
1230 | * for @request. | |
1231 | * | |
1232 | * LOCKING: | |
1233 | * None. | |
1234 | * | |
1235 | * RETURNS: | |
1236 | * 1 if ; otherwise, 0. | |
1237 | */ | |
1238 | static int atapi_drain_needed(struct request *rq) | |
1239 | { | |
57292b58 | 1240 | if (likely(!blk_rq_is_passthrough(rq))) |
fa2fc7f4 JB |
1241 | return 0; |
1242 | ||
a8ebb056 | 1243 | if (!blk_rq_bytes(rq) || op_is_write(req_op(rq))) |
fa2fc7f4 JB |
1244 | return 0; |
1245 | ||
82ed4db4 | 1246 | return atapi_cmd_type(scsi_req(rq)->cmd[0]) == ATAPI_MISC; |
fa2fc7f4 JB |
1247 | } |
1248 | ||
1249 | static int ata_scsi_dev_config(struct scsi_device *sdev, | |
1250 | struct ata_device *dev) | |
a6cce2a7 | 1251 | { |
900e599e | 1252 | struct request_queue *q = sdev->request_queue; |
1253 | ||
45fabbb7 EO |
1254 | if (!ata_id_has_unload(dev->id)) |
1255 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1256 | ||
914ed354 | 1257 | /* configure max sectors */ |
900e599e | 1258 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1259 | |
fa2fc7f4 | 1260 | if (dev->class == ATA_DEV_ATAPI) { |
fa2fc7f4 JB |
1261 | void *buf; |
1262 | ||
729a6a30 TH |
1263 | sdev->sector_size = ATA_SECT_SIZE; |
1264 | ||
1265 | /* set DMA padding */ | |
900e599e | 1266 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 JB |
1267 | |
1268 | /* configure draining */ | |
1269 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); | |
1270 | if (!buf) { | |
a9a79dfe | 1271 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1272 | return -ENOMEM; |
1273 | } | |
1274 | ||
1275 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); | |
1276 | } else { | |
295124dc | 1277 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1278 | sdev->manage_start_stop = 1; |
dde20207 | 1279 | } |
d8cf5389 | 1280 | |
729a6a30 TH |
1281 | /* |
1282 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1283 | * page boundary. Enforce it by requiring buffers to be sector | |
1284 | * aligned, which works iff sector_size is not larger than | |
1285 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1286 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1287 | */ | |
1288 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1289 | ata_dev_warn(dev, |
729a6a30 TH |
1290 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1291 | sdev->sector_size); | |
1292 | ||
900e599e | 1293 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1294 | |
f26792d5 JG |
1295 | if (dev->flags & ATA_DFLAG_AN) |
1296 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1297 | ||
a6e6ce8e TH |
1298 | if (dev->flags & ATA_DFLAG_NCQ) { |
1299 | int depth; | |
1300 | ||
1301 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); | |
69278f79 | 1302 | depth = min(ATA_MAX_QUEUE, depth); |
db5ed4df | 1303 | scsi_change_queue_depth(sdev, depth); |
a6e6ce8e | 1304 | } |
fa2fc7f4 | 1305 | |
d80210f2 CH |
1306 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1307 | sdev->security_supported = 1; | |
1308 | ||
295124dc | 1309 | dev->sdev = sdev; |
fa2fc7f4 | 1310 | return 0; |
a6cce2a7 BK |
1311 | } |
1312 | ||
1da177e4 LT |
1313 | /** |
1314 | * ata_scsi_slave_config - Set SCSI device attributes | |
1315 | * @sdev: SCSI device to examine | |
1316 | * | |
1317 | * This is called before we actually start reading | |
1318 | * and writing to the device, to configure certain | |
1319 | * SCSI mid-layer behaviors. | |
1320 | * | |
1321 | * LOCKING: | |
1322 | * Defined by SCSI layer. We don't really care. | |
1323 | */ | |
1324 | ||
1325 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1326 | { | |
31534363 TH |
1327 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1328 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1329 | int rc = 0; |
31534363 | 1330 | |
a6cce2a7 | 1331 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1332 | |
31534363 | 1333 | if (dev) |
fa2fc7f4 | 1334 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1335 | |
fa2fc7f4 | 1336 | return rc; |
1da177e4 LT |
1337 | } |
1338 | ||
83c47bcb TH |
1339 | /** |
1340 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1341 | * @sdev: SCSI device to be destroyed | |
1342 | * | |
1343 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1344 | * this unplugging was initiated by libata as indicated by NULL | |
1345 | * dev->sdev, this function doesn't have to do anything. | |
1346 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1347 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1348 | * EH. | |
1349 | * | |
1350 | * LOCKING: | |
1351 | * Defined by SCSI layer. We don't really care. | |
1352 | */ | |
1353 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1354 | { | |
1355 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
fa2fc7f4 | 1356 | struct request_queue *q = sdev->request_queue; |
83c47bcb TH |
1357 | unsigned long flags; |
1358 | struct ata_device *dev; | |
1359 | ||
1360 | if (!ap->ops->error_handler) | |
1361 | return; | |
1362 | ||
ba6a1308 | 1363 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1364 | dev = __ata_scsi_find_dev(ap, sdev); |
1365 | if (dev && dev->sdev) { | |
1366 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1367 | dev->sdev = NULL; | |
1368 | dev->flags |= ATA_DFLAG_DETACH; | |
1369 | ata_port_schedule_eh(ap); | |
1370 | } | |
ba6a1308 | 1371 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 JB |
1372 | |
1373 | kfree(q->dma_drain_buffer); | |
1374 | q->dma_drain_buffer = NULL; | |
1375 | q->dma_drain_size = 0; | |
83c47bcb TH |
1376 | } |
1377 | ||
a6e6ce8e | 1378 | /** |
f6e67035 | 1379 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth |
6d2dd054 MPS |
1380 | * @ap: ATA port to which the device change the queue depth |
1381 | * @sdev: SCSI device to configure queue depth for | |
1382 | * @queue_depth: new queue depth | |
a6e6ce8e | 1383 | * |
f6e67035 DW |
1384 | * libsas and libata have different approaches for associating a sdev to |
1385 | * its ata_port. | |
a6e6ce8e | 1386 | * |
a6e6ce8e | 1387 | */ |
f6e67035 | 1388 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
db5ed4df | 1389 | int queue_depth) |
a6e6ce8e | 1390 | { |
a6e6ce8e | 1391 | struct ata_device *dev; |
360f654e | 1392 | unsigned long flags; |
a6e6ce8e | 1393 | |
c3c70c44 | 1394 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
a6e6ce8e TH |
1395 | return sdev->queue_depth; |
1396 | ||
1397 | dev = ata_scsi_find_dev(ap, sdev); | |
1398 | if (!dev || !ata_dev_enabled(dev)) | |
1399 | return sdev->queue_depth; | |
1400 | ||
c3c70c44 | 1401 | /* NCQ enabled? */ |
360f654e | 1402 | spin_lock_irqsave(ap->lock, flags); |
c3c70c44 TH |
1403 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
1404 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { | |
360f654e | 1405 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
c3c70c44 TH |
1406 | queue_depth = 1; |
1407 | } | |
360f654e TH |
1408 | spin_unlock_irqrestore(ap->lock, flags); |
1409 | ||
c3c70c44 TH |
1410 | /* limit and apply queue depth */ |
1411 | queue_depth = min(queue_depth, sdev->host->can_queue); | |
1412 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); | |
69278f79 | 1413 | queue_depth = min(queue_depth, ATA_MAX_QUEUE); |
c3c70c44 TH |
1414 | |
1415 | if (sdev->queue_depth == queue_depth) | |
1416 | return -EINVAL; | |
1417 | ||
db5ed4df | 1418 | return scsi_change_queue_depth(sdev, queue_depth); |
a6e6ce8e TH |
1419 | } |
1420 | ||
f6e67035 DW |
1421 | /** |
1422 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config | |
1423 | * @sdev: SCSI device to configure queue depth for | |
1424 | * @queue_depth: new queue depth | |
f6e67035 DW |
1425 | * |
1426 | * This is libata standard hostt->change_queue_depth callback. | |
1427 | * SCSI will call into this callback when user tries to set queue | |
1428 | * depth via sysfs. | |
1429 | * | |
1430 | * LOCKING: | |
1431 | * SCSI layer (we don't care) | |
1432 | * | |
1433 | * RETURNS: | |
1434 | * Newly configured queue depth. | |
1435 | */ | |
db5ed4df | 1436 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
f6e67035 DW |
1437 | { |
1438 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1439 | ||
db5ed4df | 1440 | return __ata_change_queue_depth(ap, sdev, queue_depth); |
f6e67035 DW |
1441 | } |
1442 | ||
972dcafb DG |
1443 | /** |
1444 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1445 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1446 | * |
1447 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1448 | * (to start). Perhaps these commands should be preceded by | |
1449 | * CHECK POWER MODE to see what power mode the device is already in. | |
1450 | * [See SAT revision 5 at www.t10.org] | |
1451 | * | |
1452 | * LOCKING: | |
cca3974e | 1453 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1454 | * |
1455 | * RETURNS: | |
1456 | * Zero on success, non-zero on error. | |
1457 | */ | |
ad706991 | 1458 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1459 | { |
542b1444 | 1460 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1461 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1462 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1463 | u16 fp; |
0df10b84 | 1464 | u8 bp = 0xff; |
972dcafb | 1465 | |
bcfc867d HR |
1466 | if (scmd->cmd_len < 5) { |
1467 | fp = 4; | |
2e5704f6 | 1468 | goto invalid_fld; |
bcfc867d | 1469 | } |
2e5704f6 | 1470 | |
972dcafb DG |
1471 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1472 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1473 | if (cdb[1] & 0x1) { |
972dcafb DG |
1474 | ; /* ignore IMMED bit, violates sat-r05 */ |
1475 | } | |
bcfc867d HR |
1476 | if (cdb[4] & 0x2) { |
1477 | fp = 4; | |
0df10b84 | 1478 | bp = 1; |
ae006510 | 1479 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1480 | } |
1481 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1482 | fp = 4; | |
0df10b84 | 1483 | bp = 3; |
ae006510 | 1484 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1485 | } |
e31e8531 | 1486 | |
542b1444 | 1487 | if (cdb[4] & 0x1) { |
972dcafb | 1488 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1489 | |
1490 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1491 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1492 | |
1493 | tf->lbah = 0x0; | |
1494 | tf->lbam = 0x0; | |
1495 | tf->lbal = 0x0; | |
1496 | tf->device |= ATA_LBA; | |
1497 | } else { | |
1498 | /* CHS */ | |
1499 | tf->lbal = 0x1; /* sect */ | |
1500 | tf->lbam = 0x0; /* cyl low */ | |
1501 | tf->lbah = 0x0; /* cyl high */ | |
1502 | } | |
1503 | ||
972dcafb | 1504 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1505 | } else { |
2a6e58d2 RW |
1506 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1507 | * or S5) causing some drives to spin up and down again. | |
1508 | */ | |
1509 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1510 | system_state == SYSTEM_POWER_OFF) | |
1511 | goto skip; | |
1512 | ||
1513 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1514 | system_entering_hibernation()) | |
1515 | goto skip; | |
1516 | ||
78981a7c RH |
1517 | /* Issue ATA STANDBY IMMEDIATE command */ |
1518 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1519 | } |
78981a7c | 1520 | |
972dcafb DG |
1521 | /* |
1522 | * Standby and Idle condition timers could be implemented but that | |
1523 | * would require libata to implement the Power condition mode page | |
1524 | * and allow the user to change it. Changing mode pages requires | |
1525 | * MODE SELECT to be implemented. | |
1526 | */ | |
1527 | ||
1528 | return 0; | |
ae006510 | 1529 | |
2a6e58d2 | 1530 | invalid_fld: |
0df10b84 | 1531 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1532 | return 1; |
2a6e58d2 RW |
1533 | skip: |
1534 | scmd->result = SAM_STAT_GOOD; | |
1535 | return 1; | |
972dcafb DG |
1536 | } |
1537 | ||
1538 | ||
1da177e4 LT |
1539 | /** |
1540 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1541 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1542 | * |
1543 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1544 | * FLUSH CACHE EXT. | |
1545 | * | |
1546 | * LOCKING: | |
cca3974e | 1547 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1548 | * |
1549 | * RETURNS: | |
1550 | * Zero on success, non-zero on error. | |
1551 | */ | |
ad706991 | 1552 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1553 | { |
1554 | struct ata_taskfile *tf = &qc->tf; | |
1555 | ||
1556 | tf->flags |= ATA_TFLAG_DEVICE; | |
1557 | tf->protocol = ATA_PROT_NODATA; | |
1558 | ||
6fc49adb | 1559 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1560 | tf->command = ATA_CMD_FLUSH_EXT; |
1561 | else | |
1562 | tf->command = ATA_CMD_FLUSH; | |
1563 | ||
b666da35 TH |
1564 | /* flush is critical for IO integrity, consider it an IO command */ |
1565 | qc->flags |= ATA_QCFLAG_IO; | |
1566 | ||
1da177e4 LT |
1567 | return 0; |
1568 | } | |
1569 | ||
3aef5231 AL |
1570 | /** |
1571 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1572 | * @cdb: SCSI command to translate |
3aef5231 AL |
1573 | * |
1574 | * Calculate LBA and transfer length for 6-byte commands. | |
1575 | * | |
1576 | * RETURNS: | |
1577 | * @plba: the LBA | |
1578 | * @plen: the transfer length | |
1579 | */ | |
542b1444 | 1580 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1581 | { |
1582 | u64 lba = 0; | |
6c7b7d2b | 1583 | u32 len; |
3aef5231 AL |
1584 | |
1585 | VPRINTK("six-byte command\n"); | |
1586 | ||
6c7b7d2b | 1587 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1588 | lba |= ((u64)cdb[2]) << 8; |
1589 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1590 | |
6c7b7d2b | 1591 | len = cdb[4]; |
3aef5231 AL |
1592 | |
1593 | *plba = lba; | |
1594 | *plen = len; | |
1595 | } | |
1596 | ||
1597 | /** | |
1598 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1599 | * @cdb: SCSI command to translate |
3aef5231 AL |
1600 | * |
1601 | * Calculate LBA and transfer length for 10-byte commands. | |
1602 | * | |
1603 | * RETURNS: | |
1604 | * @plba: the LBA | |
1605 | * @plen: the transfer length | |
1606 | */ | |
542b1444 | 1607 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1608 | { |
1609 | u64 lba = 0; | |
1610 | u32 len = 0; | |
1611 | ||
1612 | VPRINTK("ten-byte command\n"); | |
1613 | ||
542b1444 TH |
1614 | lba |= ((u64)cdb[2]) << 24; |
1615 | lba |= ((u64)cdb[3]) << 16; | |
1616 | lba |= ((u64)cdb[4]) << 8; | |
1617 | lba |= ((u64)cdb[5]); | |
3aef5231 | 1618 | |
542b1444 TH |
1619 | len |= ((u32)cdb[7]) << 8; |
1620 | len |= ((u32)cdb[8]); | |
3aef5231 AL |
1621 | |
1622 | *plba = lba; | |
1623 | *plen = len; | |
1624 | } | |
1625 | ||
1626 | /** | |
1627 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1628 | * @cdb: SCSI command to translate |
3aef5231 AL |
1629 | * |
1630 | * Calculate LBA and transfer length for 16-byte commands. | |
1631 | * | |
1632 | * RETURNS: | |
1633 | * @plba: the LBA | |
1634 | * @plen: the transfer length | |
1635 | */ | |
542b1444 | 1636 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1637 | { |
1638 | u64 lba = 0; | |
1639 | u32 len = 0; | |
1640 | ||
1641 | VPRINTK("sixteen-byte command\n"); | |
1642 | ||
542b1444 TH |
1643 | lba |= ((u64)cdb[2]) << 56; |
1644 | lba |= ((u64)cdb[3]) << 48; | |
1645 | lba |= ((u64)cdb[4]) << 40; | |
1646 | lba |= ((u64)cdb[5]) << 32; | |
1647 | lba |= ((u64)cdb[6]) << 24; | |
1648 | lba |= ((u64)cdb[7]) << 16; | |
1649 | lba |= ((u64)cdb[8]) << 8; | |
1650 | lba |= ((u64)cdb[9]); | |
3aef5231 | 1651 | |
542b1444 TH |
1652 | len |= ((u32)cdb[10]) << 24; |
1653 | len |= ((u32)cdb[11]) << 16; | |
1654 | len |= ((u32)cdb[12]) << 8; | |
1655 | len |= ((u32)cdb[13]); | |
3aef5231 AL |
1656 | |
1657 | *plba = lba; | |
1658 | *plen = len; | |
1659 | } | |
1660 | ||
1da177e4 LT |
1661 | /** |
1662 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1663 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1664 | * |
1665 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1666 | * | |
1667 | * LOCKING: | |
cca3974e | 1668 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1669 | * |
1670 | * RETURNS: | |
1671 | * Zero on success, non-zero on error. | |
1672 | */ | |
ad706991 | 1673 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1674 | { |
542b1444 | 1675 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1676 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1677 | struct ata_device *dev = qc->dev; |
1da177e4 | 1678 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1679 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1680 | u64 block; |
1681 | u32 n_block; | |
bcfc867d | 1682 | u16 fp; |
1da177e4 LT |
1683 | |
1684 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1685 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1686 | |
2e5704f6 | 1687 | if (cdb[0] == VERIFY) { |
bcfc867d HR |
1688 | if (scmd->cmd_len < 10) { |
1689 | fp = 9; | |
2e5704f6 | 1690 | goto invalid_fld; |
bcfc867d | 1691 | } |
542b1444 | 1692 | scsi_10_lba_len(cdb, &block, &n_block); |
2e5704f6 | 1693 | } else if (cdb[0] == VERIFY_16) { |
bcfc867d HR |
1694 | if (scmd->cmd_len < 16) { |
1695 | fp = 15; | |
2e5704f6 | 1696 | goto invalid_fld; |
bcfc867d | 1697 | } |
542b1444 | 1698 | scsi_16_lba_len(cdb, &block, &n_block); |
bcfc867d HR |
1699 | } else { |
1700 | fp = 0; | |
ae006510 | 1701 | goto invalid_fld; |
bcfc867d | 1702 | } |
1da177e4 | 1703 | |
8bf62ece | 1704 | if (!n_block) |
ae006510 | 1705 | goto nothing_to_do; |
8bf62ece | 1706 | if (block >= dev_sectors) |
ae006510 | 1707 | goto out_of_range; |
8bf62ece | 1708 | if ((block + n_block) > dev_sectors) |
ae006510 | 1709 | goto out_of_range; |
1da177e4 | 1710 | |
07506697 AL |
1711 | if (dev->flags & ATA_DFLAG_LBA) { |
1712 | tf->flags |= ATA_TFLAG_LBA; | |
1713 | ||
c6a33e24 AL |
1714 | if (lba_28_ok(block, n_block)) { |
1715 | /* use LBA28 */ | |
1716 | tf->command = ATA_CMD_VERIFY; | |
1717 | tf->device |= (block >> 24) & 0xf; | |
1718 | } else if (lba_48_ok(block, n_block)) { | |
1719 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1720 | goto out_of_range; | |
07506697 AL |
1721 | |
1722 | /* use LBA48 */ | |
1723 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1724 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1725 | |
8bf62ece | 1726 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1727 | |
8bf62ece AL |
1728 | tf->hob_lbah = (block >> 40) & 0xff; |
1729 | tf->hob_lbam = (block >> 32) & 0xff; | |
1730 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1731 | } else |
1732 | /* request too large even for LBA48 */ | |
1733 | goto out_of_range; | |
8bf62ece AL |
1734 | |
1735 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1736 | |
8bf62ece AL |
1737 | tf->lbah = (block >> 16) & 0xff; |
1738 | tf->lbam = (block >> 8) & 0xff; | |
1739 | tf->lbal = block & 0xff; | |
1da177e4 | 1740 | |
8bf62ece AL |
1741 | tf->device |= ATA_LBA; |
1742 | } else { | |
1743 | /* CHS */ | |
1744 | u32 sect, head, cyl, track; | |
1745 | ||
c6a33e24 AL |
1746 | if (!lba_28_ok(block, n_block)) |
1747 | goto out_of_range; | |
07506697 | 1748 | |
8bf62ece AL |
1749 | /* Convert LBA to CHS */ |
1750 | track = (u32)block / dev->sectors; | |
1751 | cyl = track / dev->heads; | |
1752 | head = track % dev->heads; | |
1753 | sect = (u32)block % dev->sectors + 1; | |
1754 | ||
c187c4b5 AL |
1755 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
1756 | (u32)block, track, cyl, head, sect); | |
2e9edbf8 JG |
1757 | |
1758 | /* Check whether the converted CHS can fit. | |
1759 | Cylinder: 0-65535 | |
8bf62ece AL |
1760 | Head: 0-15 |
1761 | Sector: 1-255*/ | |
2e9edbf8 | 1762 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1763 | goto out_of_range; |
2e9edbf8 | 1764 | |
8bf62ece AL |
1765 | tf->command = ATA_CMD_VERIFY; |
1766 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1767 | tf->lbal = sect; | |
1768 | tf->lbam = cyl; | |
1769 | tf->lbah = cyl >> 8; | |
1770 | tf->device |= head; | |
1771 | } | |
1da177e4 LT |
1772 | |
1773 | return 0; | |
ae006510 DG |
1774 | |
1775 | invalid_fld: | |
0df10b84 | 1776 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1777 | return 1; |
1778 | ||
1779 | out_of_range: | |
06dbde5f | 1780 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1781 | /* "Logical Block Address out of range" */ |
1782 | return 1; | |
1783 | ||
1784 | nothing_to_do: | |
542b1444 | 1785 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1786 | return 1; |
1da177e4 LT |
1787 | } |
1788 | ||
2d727150 JA |
1789 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1790 | { | |
1791 | struct request *rq = scmd->request; | |
1792 | u32 req_blocks; | |
1793 | ||
1794 | if (!blk_rq_is_passthrough(rq)) | |
1795 | return true; | |
1796 | ||
1797 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1798 | if (n_blocks > req_blocks) | |
1799 | return false; | |
1800 | ||
1801 | return true; | |
1802 | } | |
1803 | ||
1da177e4 LT |
1804 | /** |
1805 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1806 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1807 | * |
1808 | * Converts any of six SCSI read/write commands into the | |
1809 | * ATA counterpart, including starting sector (LBA), | |
1810 | * sector count, and taking into account the device's LBA48 | |
1811 | * support. | |
1812 | * | |
1813 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1814 | * %WRITE_16 are currently supported. | |
1815 | * | |
1816 | * LOCKING: | |
cca3974e | 1817 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1818 | * |
1819 | * RETURNS: | |
1820 | * Zero on success, non-zero on error. | |
1821 | */ | |
ad706991 | 1822 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1823 | { |
542b1444 | 1824 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1825 | const u8 *cdb = scmd->cmnd; |
8e061784 AM |
1826 | struct request *rq = scmd->request; |
1827 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); | |
bd056d7e | 1828 | unsigned int tf_flags = 0; |
3aef5231 AL |
1829 | u64 block; |
1830 | u32 n_block; | |
bd056d7e | 1831 | int rc; |
bcfc867d | 1832 | u16 fp = 0; |
1da177e4 | 1833 | |
542b1444 | 1834 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
bd056d7e | 1835 | tf_flags |= ATA_TFLAG_WRITE; |
1da177e4 | 1836 | |
9a3dccc4 | 1837 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1838 | switch (cdb[0]) { |
3aef5231 AL |
1839 | case READ_10: |
1840 | case WRITE_10: | |
bcfc867d HR |
1841 | if (unlikely(scmd->cmd_len < 10)) { |
1842 | fp = 9; | |
2e5704f6 | 1843 | goto invalid_fld; |
bcfc867d | 1844 | } |
542b1444 | 1845 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1846 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1847 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1848 | if (!ata_check_nblocks(scmd, n_block)) |
1849 | goto invalid_fld; | |
3aef5231 AL |
1850 | break; |
1851 | case READ_6: | |
1852 | case WRITE_6: | |
bcfc867d HR |
1853 | if (unlikely(scmd->cmd_len < 6)) { |
1854 | fp = 5; | |
2e5704f6 | 1855 | goto invalid_fld; |
bcfc867d | 1856 | } |
542b1444 | 1857 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1858 | |
1859 | /* for 6-byte r/w commands, transfer length 0 | |
1860 | * means 256 blocks of data, not 0 block. | |
1861 | */ | |
76b2bf9b JG |
1862 | if (!n_block) |
1863 | n_block = 256; | |
2d727150 JA |
1864 | if (!ata_check_nblocks(scmd, n_block)) |
1865 | goto invalid_fld; | |
3aef5231 AL |
1866 | break; |
1867 | case READ_16: | |
1868 | case WRITE_16: | |
bcfc867d HR |
1869 | if (unlikely(scmd->cmd_len < 16)) { |
1870 | fp = 15; | |
2e5704f6 | 1871 | goto invalid_fld; |
bcfc867d | 1872 | } |
542b1444 | 1873 | scsi_16_lba_len(cdb, &block, &n_block); |
3e451a49 | 1874 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1875 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1876 | if (!ata_check_nblocks(scmd, n_block)) |
1877 | goto invalid_fld; | |
3aef5231 AL |
1878 | break; |
1879 | default: | |
8bf62ece | 1880 | DPRINTK("no-byte command\n"); |
bcfc867d | 1881 | fp = 0; |
ae006510 | 1882 | goto invalid_fld; |
1da177e4 LT |
1883 | } |
1884 | ||
8bf62ece AL |
1885 | /* Check and compose ATA command */ |
1886 | if (!n_block) | |
c187c4b5 AL |
1887 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1888 | * length 0 means transfer 0 block of data. | |
1889 | * However, for ATA R/W commands, sector count 0 means | |
1890 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1891 | * |
1892 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1893 | */ |
ae006510 | 1894 | goto nothing_to_do; |
1da177e4 | 1895 | |
bd056d7e | 1896 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1897 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1898 | |
bd056d7e | 1899 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
4e5b6260 | 1900 | qc->hw_tag, class); |
8e061784 | 1901 | |
bd056d7e TH |
1902 | if (likely(rc == 0)) |
1903 | return 0; | |
ae006510 | 1904 | |
bd056d7e TH |
1905 | if (rc == -ERANGE) |
1906 | goto out_of_range; | |
1907 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1908 | invalid_fld: |
0df10b84 | 1909 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1910 | return 1; |
1911 | ||
1912 | out_of_range: | |
06dbde5f | 1913 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1914 | /* "Logical Block Address out of range" */ |
1915 | return 1; | |
1916 | ||
1917 | nothing_to_do: | |
542b1444 | 1918 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1919 | return 1; |
1da177e4 LT |
1920 | } |
1921 | ||
2aa8f5d6 CH |
1922 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1923 | { | |
1924 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1925 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1926 | ||
1927 | ata_qc_free(qc); | |
1928 | done(cmd); | |
1929 | } | |
1930 | ||
77853bf2 | 1931 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1932 | { |
c31f571d | 1933 | struct ata_port *ap = qc->ap; |
1da177e4 | 1934 | struct scsi_cmnd *cmd = qc->scsicmd; |
a7dac447 | 1935 | u8 *cdb = cmd->cmnd; |
2dcb407e | 1936 | int need_sense = (qc->err_mask != 0); |
b095518e JG |
1937 | |
1938 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1939 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1940 | * generate because the user forced us to [CK_COND =1], a check |
1941 | * condition is generated and the ATA register values are returned | |
b095518e | 1942 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1943 | * was no error, we use the following sense data: |
1944 | * sk = RECOVERED ERROR | |
1945 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1946 | */ |
a7dac447 | 1947 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1948 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1949 | ata_gen_passthru_sense(qc); |
5b01e4b9 HR |
1950 | else if (qc->flags & ATA_QCFLAG_SENSE_VALID) |
1951 | cmd->result = SAM_STAT_CHECK_CONDITION; | |
25c7ce7f CH |
1952 | else if (need_sense) |
1953 | ata_gen_ata_sense(qc); | |
1954 | else | |
1955 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 1956 | |
c31f571d | 1957 | if (need_sense && !ap->ops->error_handler) |
44877b4e | 1958 | ata_dump_status(ap->print_id, &qc->result_tf); |
1da177e4 | 1959 | |
2aa8f5d6 | 1960 | ata_qc_done(qc); |
1da177e4 LT |
1961 | } |
1962 | ||
1963 | /** | |
1964 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1965 | * @dev: ATA device to which the command is addressed |
1966 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1967 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1968 | * | |
1969 | * Our ->queuecommand() function has decided that the SCSI | |
1970 | * command issued can be directly translated into an ATA | |
1971 | * command, rather than handled internally. | |
1972 | * | |
1973 | * This function sets up an ata_queued_cmd structure for the | |
1974 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1975 | * | |
ae006510 DG |
1976 | * The xlat_func argument (actor) returns 0 if ready to execute |
1977 | * ATA command, else 1 to finish translation. If 1 is returned | |
1978 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1979 | * to be set reflecting an error condition or clean (early) | |
1980 | * termination. | |
1981 | * | |
1da177e4 | 1982 | * LOCKING: |
cca3974e | 1983 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1984 | * |
1985 | * RETURNS: | |
1986 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1987 | * needs to be deferred. | |
1da177e4 | 1988 | */ |
2115ea94 | 1989 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1990 | ata_xlat_func_t xlat_func) |
1da177e4 | 1991 | { |
31cc23b3 | 1992 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1993 | struct ata_queued_cmd *qc; |
31cc23b3 | 1994 | int rc; |
1da177e4 LT |
1995 | |
1996 | VPRINTK("ENTER\n"); | |
1997 | ||
b27dcfb0 | 1998 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1999 | if (!qc) |
ae006510 | 2000 | goto err_mem; |
1da177e4 LT |
2001 | |
2002 | /* data is present; dma-map it */ | |
be7db055 CH |
2003 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
2004 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 2005 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 2006 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 2007 | goto err_did; |
1da177e4 LT |
2008 | } |
2009 | ||
7120165c | 2010 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
2011 | |
2012 | qc->dma_dir = cmd->sc_data_direction; | |
2013 | } | |
2014 | ||
2015 | qc->complete_fn = ata_scsi_qc_complete; | |
2016 | ||
ad706991 | 2017 | if (xlat_func(qc)) |
ae006510 | 2018 | goto early_finish; |
1da177e4 | 2019 | |
31cc23b3 TH |
2020 | if (ap->ops->qc_defer) { |
2021 | if ((rc = ap->ops->qc_defer(qc))) | |
2022 | goto defer; | |
2023 | } | |
2024 | ||
1da177e4 | 2025 | /* select device, send command to hardware */ |
8e0e694a | 2026 | ata_qc_issue(qc); |
1da177e4 LT |
2027 | |
2028 | VPRINTK("EXIT\n"); | |
2115ea94 | 2029 | return 0; |
1da177e4 | 2030 | |
ae006510 | 2031 | early_finish: |
2dcb407e | 2032 | ata_qc_free(qc); |
b27dcfb0 | 2033 | cmd->scsi_done(cmd); |
ae006510 | 2034 | DPRINTK("EXIT - early finish (good or error)\n"); |
2115ea94 | 2035 | return 0; |
ae006510 DG |
2036 | |
2037 | err_did: | |
1da177e4 | 2038 | ata_qc_free(qc); |
ae006510 | 2039 | cmd->result = (DID_ERROR << 16); |
b27dcfb0 | 2040 | cmd->scsi_done(cmd); |
253b92ec | 2041 | err_mem: |
ae006510 | 2042 | DPRINTK("EXIT - internal\n"); |
2115ea94 | 2043 | return 0; |
3dc1d881 TH |
2044 | |
2045 | defer: | |
31cc23b3 | 2046 | ata_qc_free(qc); |
3dc1d881 | 2047 | DPRINTK("EXIT - defer\n"); |
31cc23b3 TH |
2048 | if (rc == ATA_DEFER_LINK) |
2049 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
2050 | else | |
2051 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
2052 | } |
2053 | ||
f0a37d12 CH |
2054 | struct ata_scsi_args { |
2055 | struct ata_device *dev; | |
2056 | u16 *id; | |
2057 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
2058 | }; |
2059 | ||
1da177e4 LT |
2060 | /** |
2061 | * ata_scsi_rbuf_get - Map response buffer. | |
ec2a20e6 | 2062 | * @cmd: SCSI command containing buffer to be mapped. |
87340e98 TH |
2063 | * @flags: unsigned long variable to store irq enable status |
2064 | * @copy_in: copy in from user buffer | |
1da177e4 | 2065 | * |
87340e98 | 2066 | * Prepare buffer for simulated SCSI commands. |
1da177e4 LT |
2067 | * |
2068 | * LOCKING: | |
87340e98 | 2069 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
1da177e4 LT |
2070 | * |
2071 | * RETURNS: | |
87340e98 | 2072 | * Pointer to response buffer. |
1da177e4 | 2073 | */ |
87340e98 TH |
2074 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
2075 | unsigned long *flags) | |
1da177e4 | 2076 | { |
87340e98 | 2077 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
1da177e4 | 2078 | |
87340e98 TH |
2079 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
2080 | if (copy_in) | |
2081 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2082 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2083 | return ata_scsi_rbuf; | |
1da177e4 LT |
2084 | } |
2085 | ||
2086 | /** | |
2087 | * ata_scsi_rbuf_put - Unmap response buffer. | |
2088 | * @cmd: SCSI command containing buffer to be unmapped. | |
87340e98 TH |
2089 | * @copy_out: copy out result |
2090 | * @flags: @flags passed to ata_scsi_rbuf_get() | |
1da177e4 | 2091 | * |
87340e98 TH |
2092 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
2093 | * @copy_back is true. | |
1da177e4 LT |
2094 | * |
2095 | * LOCKING: | |
87340e98 | 2096 | * Unlocks ata_scsi_rbuf_lock. |
1da177e4 | 2097 | */ |
87340e98 TH |
2098 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
2099 | unsigned long *flags) | |
1da177e4 | 2100 | { |
87340e98 TH |
2101 | if (copy_out) |
2102 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2103 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2104 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); | |
1da177e4 LT |
2105 | } |
2106 | ||
2107 | /** | |
2108 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
2109 | * @args: device IDENTIFY data / SCSI command of interest. | |
2110 | * @actor: Callback hook for desired SCSI command simulator | |
2111 | * | |
2112 | * Takes care of the hard work of simulating a SCSI command... | |
2113 | * Mapping the response buffer, calling the command's handler, | |
2114 | * and handling the handler's return value. This return value | |
2115 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
2116 | * completed successfully (0), or not (in which case cmd->result |
2117 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
2118 | * |
2119 | * LOCKING: | |
cca3974e | 2120 | * spin_lock_irqsave(host lock) |
1da177e4 | 2121 | */ |
f0761be3 | 2122 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 2123 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 LT |
2124 | { |
2125 | u8 *rbuf; | |
87340e98 | 2126 | unsigned int rc; |
1da177e4 | 2127 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
2128 | unsigned long flags; |
2129 | ||
87340e98 TH |
2130 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
2131 | rc = actor(args, rbuf); | |
2132 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); | |
b445c568 | 2133 | |
ae006510 | 2134 | if (rc == 0) |
1da177e4 | 2135 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
2136 | } |
2137 | ||
2138 | /** | |
2139 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
2140 | * @args: device IDENTIFY data / SCSI command of interest. | |
2141 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2142 | * |
2143 | * Returns standard device identification data associated | |
b142eb65 | 2144 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
2145 | * |
2146 | * LOCKING: | |
cca3974e | 2147 | * spin_lock_irqsave(host lock) |
1da177e4 | 2148 | */ |
87340e98 | 2149 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2150 | { |
e94f7914 | 2151 | static const u8 versions[] = { |
f9ca5ab8 | 2152 | 0x00, |
87340e98 TH |
2153 | 0x60, /* SAM-3 (no version claimed) */ |
2154 | ||
2155 | 0x03, | |
2156 | 0x20, /* SBC-2 (no version claimed) */ | |
2157 | ||
29a37ea4 TY |
2158 | 0x03, |
2159 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 2160 | }; |
e94f7914 | 2161 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
2162 | 0x00, |
2163 | 0xA0, /* SAM-5 (no version claimed) */ | |
2164 | ||
856c4663 HR |
2165 | 0x06, |
2166 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 2167 | |
856c4663 HR |
2168 | 0x05, |
2169 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
2170 | |
2171 | 0x60, | |
856c4663 | 2172 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
2173 | }; |
2174 | ||
1da177e4 LT |
2175 | u8 hdr[] = { |
2176 | TYPE_DISK, | |
2177 | 0, | |
2178 | 0x5, /* claim SPC-3 version compatibility */ | |
2179 | 2, | |
415ffdde TY |
2180 | 95 - 4, |
2181 | 0, | |
2182 | 0, | |
2183 | 2 | |
1da177e4 LT |
2184 | }; |
2185 | ||
87340e98 TH |
2186 | VPRINTK("ENTER\n"); |
2187 | ||
8a3e33cf ML |
2188 | /* set scsi removable (RMB) bit per ata bit, or if the |
2189 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
2190 | */ | |
2191 | if (ata_id_removable(args->id) || | |
2192 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
2193 | hdr[1] |= (1 << 7); |
2194 | ||
56b8cbab | 2195 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 2196 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
2197 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
2198 | } | |
f9ca5ab8 | 2199 | |
1da177e4 | 2200 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
2201 | memcpy(&rbuf[8], "ATA ", 8); |
2202 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
2203 | |
2204 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
2205 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
2206 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
2207 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 2208 | |
87340e98 TH |
2209 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
2210 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 2211 | |
856c4663 | 2212 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
2213 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
2214 | else | |
2215 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
2216 | |
2217 | return 0; | |
2218 | } | |
2219 | ||
2220 | /** | |
b142eb65 | 2221 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
2222 | * @args: device IDENTIFY data / SCSI command of interest. |
2223 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2224 | * |
b142eb65 | 2225 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
2226 | * |
2227 | * LOCKING: | |
cca3974e | 2228 | * spin_lock_irqsave(host lock) |
1da177e4 | 2229 | */ |
87340e98 | 2230 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2231 | { |
6d1003ae | 2232 | int num_pages; |
e94f7914 | 2233 | static const u8 pages[] = { |
1da177e4 LT |
2234 | 0x00, /* page 0x00, this page */ |
2235 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
2236 | 0x83, /* page 0x83, device ident page */ |
2237 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 2238 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 2239 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 2240 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 2241 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
1da177e4 | 2242 | }; |
1da177e4 | 2243 | |
6d1003ae HR |
2244 | num_pages = sizeof(pages); |
2245 | if (!(args->dev->flags & ATA_DFLAG_ZAC)) | |
2246 | num_pages--; | |
2247 | rbuf[3] = num_pages; /* number of supported VPD pages */ | |
2248 | memcpy(rbuf + 4, pages, num_pages); | |
1da177e4 LT |
2249 | return 0; |
2250 | } | |
2251 | ||
2252 | /** | |
b142eb65 | 2253 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
2254 | * @args: device IDENTIFY data / SCSI command of interest. |
2255 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2256 | * |
2257 | * Returns ATA device serial number. | |
2258 | * | |
2259 | * LOCKING: | |
cca3974e | 2260 | * spin_lock_irqsave(host lock) |
1da177e4 | 2261 | */ |
87340e98 | 2262 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2263 | { |
e94f7914 | 2264 | static const u8 hdr[] = { |
1da177e4 LT |
2265 | 0, |
2266 | 0x80, /* this page code */ | |
2267 | 0, | |
a0cf733b | 2268 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 2269 | }; |
1da177e4 | 2270 | |
87340e98 TH |
2271 | memcpy(rbuf, hdr, sizeof(hdr)); |
2272 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
2273 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
2274 | return 0; |
2275 | } | |
2276 | ||
1da177e4 | 2277 | /** |
b142eb65 | 2278 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
2279 | * @args: device IDENTIFY data / SCSI command of interest. |
2280 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2281 | * |
b142eb65 JG |
2282 | * Yields two logical unit device identification designators: |
2283 | * - vendor specific ASCII containing the ATA serial number | |
2284 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
2285 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
2286 | * |
2287 | * LOCKING: | |
cca3974e | 2288 | * spin_lock_irqsave(host lock) |
1da177e4 | 2289 | */ |
87340e98 | 2290 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2291 | { |
b142eb65 | 2292 | const int sat_model_serial_desc_len = 68; |
87340e98 | 2293 | int num; |
1da177e4 | 2294 | |
b142eb65 JG |
2295 | rbuf[1] = 0x83; /* this page code */ |
2296 | num = 4; | |
2297 | ||
87340e98 TH |
2298 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
2299 | rbuf[num + 0] = 2; | |
2300 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
2301 | num += 4; | |
2302 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2303 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
2304 | num += ATA_ID_SERNO_LEN; | |
2305 | ||
2306 | /* SAT defined lu model and serial numbers descriptor */ | |
2307 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
2308 | rbuf[num + 0] = 2; | |
2309 | rbuf[num + 1] = 1; | |
2310 | rbuf[num + 3] = sat_model_serial_desc_len; | |
2311 | num += 4; | |
2312 | memcpy(rbuf + num, "ATA ", 8); | |
2313 | num += 8; | |
2314 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
2315 | ATA_ID_PROD_LEN); | |
2316 | num += ATA_ID_PROD_LEN; | |
2317 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
2318 | ATA_ID_SERNO_LEN); | |
2319 | num += ATA_ID_SERNO_LEN; | |
2320 | ||
6b3b9d73 HR |
2321 | if (ata_id_has_wwn(args->id)) { |
2322 | /* SAT defined lu world wide name */ | |
2323 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2324 | rbuf[num + 0] = 1; | |
2325 | rbuf[num + 1] = 3; | |
2326 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2327 | num += 4; | |
2328 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2329 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2330 | num += ATA_ID_WWN_LEN; | |
2331 | } | |
b142eb65 | 2332 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2333 | return 0; |
2334 | } | |
2335 | ||
ad355b46 JG |
2336 | /** |
2337 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2338 | * @args: device IDENTIFY data / SCSI command of interest. | |
2339 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2340 | * |
2341 | * Yields SAT-specified ATA VPD page. | |
2342 | * | |
2343 | * LOCKING: | |
2344 | * spin_lock_irqsave(host lock) | |
2345 | */ | |
87340e98 | 2346 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2347 | { |
ad355b46 | 2348 | struct ata_taskfile tf; |
ad355b46 | 2349 | |
ad355b46 JG |
2350 | memset(&tf, 0, sizeof(tf)); |
2351 | ||
87340e98 TH |
2352 | rbuf[1] = 0x89; /* our page code */ |
2353 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2354 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2355 | |
87340e98 TH |
2356 | memcpy(&rbuf[8], "linux ", 8); |
2357 | memcpy(&rbuf[16], "libata ", 16); | |
2358 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 JG |
2359 | |
2360 | /* we don't store the ATA device signature, so we fake it */ | |
2361 | ||
2362 | tf.command = ATA_DRDY; /* really, this is Status reg */ | |
2363 | tf.lbal = 0x1; | |
2364 | tf.nsect = 0x1; | |
2365 | ||
87340e98 TH |
2366 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
2367 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ | |
ad355b46 | 2368 | |
87340e98 | 2369 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2370 | |
87340e98 | 2371 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2372 | return 0; |
2373 | } | |
2374 | ||
18f0f978 CH |
2375 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2376 | { | |
295124dc | 2377 | u16 min_io_sectors; |
18f0f978 CH |
2378 | |
2379 | rbuf[1] = 0xb0; | |
2380 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2381 | ||
2382 | /* | |
2383 | * Optimal transfer length granularity. | |
2384 | * | |
2385 | * This is always one physical block, but for disks with a smaller | |
2386 | * logical than physical sector size we need to figure out what the | |
2387 | * latter is. | |
2388 | */ | |
295124dc | 2389 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2390 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2391 | ||
2392 | /* | |
2393 | * Optimal unmap granularity. | |
2394 | * | |
2395 | * The ATA spec doesn't even know about a granularity or alignment | |
2396 | * for the TRIM command. We can leave away most of the unmap related | |
2397 | * VPD page entries, but we have specifify a granularity to signal | |
2398 | * that we support some form of unmap - in thise case via WRITE SAME | |
2399 | * with the unmap bit set. | |
2400 | */ | |
e78db4df | 2401 | if (ata_id_has_trim(args->id)) { |
2983860c | 2402 | put_unaligned_be64(65535 * ATA_MAX_TRIM_RNUM, &rbuf[36]); |
18f0f978 | 2403 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2404 | } |
18f0f978 CH |
2405 | |
2406 | return 0; | |
2407 | } | |
2408 | ||
1e9dbc92 MW |
2409 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2410 | { | |
4bca3286 MP |
2411 | int form_factor = ata_id_form_factor(args->id); |
2412 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2413 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2414 | |
1e9dbc92 MW |
2415 | rbuf[1] = 0xb1; |
2416 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2417 | rbuf[4] = media_rotation_rate >> 8; |
2418 | rbuf[5] = media_rotation_rate; | |
2419 | rbuf[7] = form_factor; | |
856c4663 HR |
2420 | if (zoned) |
2421 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2422 | |
2423 | return 0; | |
2424 | } | |
2425 | ||
02e0a604 MP |
2426 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2427 | { | |
2428 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2429 | rbuf[1] = 0xb2; | |
2430 | rbuf[3] = 0x4; | |
2431 | rbuf[5] = 1 << 6; /* TPWS */ | |
2432 | ||
2433 | return 0; | |
2434 | } | |
2435 | ||
6d1003ae HR |
2436 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2437 | { | |
2438 | /* | |
2439 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2440 | */ | |
2441 | rbuf[1] = 0xb6; | |
2442 | rbuf[3] = 0x3C; | |
2443 | ||
2444 | /* | |
2445 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2446 | */ | |
2447 | if (args->dev->zac_zoned_cap & 1) | |
2448 | rbuf[4] |= 1; | |
2449 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2450 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2451 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2452 | ||
2453 | return 0; | |
2454 | } | |
2455 | ||
6ca8e794 PB |
2456 | /** |
2457 | * modecpy - Prepare response for MODE SENSE | |
2458 | * @dest: output buffer | |
2459 | * @src: data being copied | |
2460 | * @n: length of mode page | |
2461 | * @changeable: whether changeable parameters are requested | |
2462 | * | |
2463 | * Generate a generic MODE SENSE page for either current or changeable | |
2464 | * parameters. | |
2465 | * | |
2466 | * LOCKING: | |
2467 | * None. | |
2468 | */ | |
2469 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2470 | { | |
2471 | if (changeable) { | |
2472 | memcpy(dest, src, 2); | |
2473 | memset(dest + 2, 0, n - 2); | |
2474 | } else { | |
2475 | memcpy(dest, src, n); | |
2476 | } | |
2477 | } | |
2478 | ||
1da177e4 LT |
2479 | /** |
2480 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2481 | * @id: device IDENTIFY data | |
87340e98 | 2482 | * @buf: output buffer |
6ca8e794 | 2483 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2484 | * |
2485 | * Generate a caching info page, which conditionally indicates | |
2486 | * write caching to the SCSI layer, depending on device | |
2487 | * capabilities. | |
2488 | * | |
2489 | * LOCKING: | |
2490 | * None. | |
2491 | */ | |
6ca8e794 | 2492 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2493 | { |
6ca8e794 | 2494 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2495 | if (changeable) { |
2496 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2497 | } else { | |
2498 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2499 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2500 | } | |
87340e98 | 2501 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2502 | } |
2503 | ||
2504 | /** | |
f086b748 | 2505 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2506 | * @dev: ATA device of interest |
87340e98 | 2507 | * @buf: output buffer |
6ca8e794 | 2508 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2509 | * |
2510 | * Generate a generic MODE SENSE control mode page. | |
2511 | * | |
2512 | * LOCKING: | |
2513 | * None. | |
2514 | */ | |
f086b748 | 2515 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
06dbde5f | 2516 | bool changeable) |
1da177e4 | 2517 | { |
6ca8e794 | 2518 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
737bee93 TY |
2519 | if (changeable) { |
2520 | buf[2] |= (1 << 2); /* ata_mselect_control() */ | |
2521 | } else { | |
2522 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2523 | ||
2524 | buf[2] |= (d_sense << 2); /* descriptor format sense data */ | |
2525 | } | |
00ac37f5 | 2526 | return sizeof(def_control_mpage); |
1da177e4 LT |
2527 | } |
2528 | ||
2529 | /** | |
2530 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2531 | * @buf: output buffer |
6ca8e794 | 2532 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2533 | * |
2534 | * Generate a generic MODE SENSE r/w error recovery page. | |
2535 | * | |
2536 | * LOCKING: | |
2537 | * None. | |
2538 | */ | |
6ca8e794 | 2539 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2540 | { |
6ca8e794 PB |
2541 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2542 | changeable); | |
00ac37f5 | 2543 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2544 | } |
2545 | ||
48bdc8ec JA |
2546 | /* |
2547 | * We can turn this into a real blacklist if it's needed, for now just | |
2548 | * blacklist any Maxtor BANC1G10 revision firmware | |
2549 | */ | |
2550 | static int ata_dev_supports_fua(u16 *id) | |
2551 | { | |
a0cf733b | 2552 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
48bdc8ec | 2553 | |
c3c013a2 JG |
2554 | if (!libata_fua) |
2555 | return 0; | |
48bdc8ec JA |
2556 | if (!ata_id_has_fua(id)) |
2557 | return 0; | |
2558 | ||
a0cf733b TH |
2559 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
2560 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); | |
48bdc8ec | 2561 | |
2e02671d | 2562 | if (strcmp(model, "Maxtor")) |
48bdc8ec | 2563 | return 1; |
2e02671d | 2564 | if (strcmp(fw, "BANC1G10")) |
48bdc8ec JA |
2565 | return 1; |
2566 | ||
2567 | return 0; /* blacklisted */ | |
2568 | } | |
2569 | ||
1da177e4 LT |
2570 | /** |
2571 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2572 | * @args: device IDENTIFY data / SCSI command of interest. | |
2573 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2574 | * |
00ac37f5 DG |
2575 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2576 | * access devices (e.g. disks) only. There should be no block | |
2577 | * descriptor for other device types. | |
1da177e4 LT |
2578 | * |
2579 | * LOCKING: | |
cca3974e | 2580 | * spin_lock_irqsave(host lock) |
1da177e4 | 2581 | */ |
87340e98 | 2582 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2583 | { |
9a3dccc4 | 2584 | struct ata_device *dev = args->dev; |
87340e98 | 2585 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2586 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2587 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2588 | 0, | |
2589 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2590 | }; | |
2591 | u8 pg, spg; | |
87340e98 | 2592 | unsigned int ebd, page_control, six_byte; |
0df10b84 | 2593 | u8 dpofua, bp = 0xff; |
bcfc867d | 2594 | u16 fp; |
1da177e4 LT |
2595 | |
2596 | VPRINTK("ENTER\n"); | |
2597 | ||
2598 | six_byte = (scsicmd[0] == MODE_SENSE); | |
00ac37f5 DG |
2599 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2600 | /* | |
2601 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2602 | */ |
00ac37f5 | 2603 | |
1da177e4 | 2604 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2605 | switch (page_control) { |
2606 | case 0: /* current */ | |
6ca8e794 PB |
2607 | case 1: /* changeable */ |
2608 | case 2: /* defaults */ | |
ae006510 DG |
2609 | break; /* supported */ |
2610 | case 3: /* saved */ | |
2611 | goto saving_not_supp; | |
ae006510 | 2612 | default: |
bcfc867d | 2613 | fp = 2; |
0df10b84 | 2614 | bp = 6; |
ae006510 DG |
2615 | goto invalid_fld; |
2616 | } | |
1da177e4 | 2617 | |
87340e98 TH |
2618 | if (six_byte) |
2619 | p += 4 + (ebd ? 8 : 0); | |
2620 | else | |
2621 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2622 | |
00ac37f5 DG |
2623 | pg = scsicmd[2] & 0x3f; |
2624 | spg = scsicmd[3]; | |
2625 | /* | |
2626 | * No mode subpages supported (yet) but asking for _all_ | |
2627 | * subpages may be valid | |
2628 | */ | |
bcfc867d HR |
2629 | if (spg && (spg != ALL_SUB_MPAGES)) { |
2630 | fp = 3; | |
00ac37f5 | 2631 | goto invalid_fld; |
bcfc867d | 2632 | } |
00ac37f5 DG |
2633 | |
2634 | switch(pg) { | |
2635 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2636 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2637 | break; |
2638 | ||
00ac37f5 | 2639 | case CACHE_MPAGE: |
6ca8e794 | 2640 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2641 | break; |
2642 | ||
87340e98 | 2643 | case CONTROL_MPAGE: |
f086b748 | 2644 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 | 2645 | break; |
1da177e4 | 2646 | |
00ac37f5 | 2647 | case ALL_MPAGES: |
6ca8e794 PB |
2648 | p += ata_msense_rw_recovery(p, page_control == 1); |
2649 | p += ata_msense_caching(args->id, p, page_control == 1); | |
f086b748 | 2650 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 LT |
2651 | break; |
2652 | ||
2653 | default: /* invalid page code */ | |
bcfc867d | 2654 | fp = 2; |
ae006510 | 2655 | goto invalid_fld; |
1da177e4 LT |
2656 | } |
2657 | ||
9a3dccc4 | 2658 | dpofua = 0; |
f79d409f | 2659 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
9a3dccc4 TH |
2660 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
2661 | dpofua = 1 << 4; | |
2662 | ||
1da177e4 | 2663 | if (six_byte) { |
87340e98 TH |
2664 | rbuf[0] = p - rbuf - 1; |
2665 | rbuf[2] |= dpofua; | |
00ac37f5 | 2666 | if (ebd) { |
87340e98 TH |
2667 | rbuf[3] = sizeof(sat_blk_desc); |
2668 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2669 | } |
1da177e4 | 2670 | } else { |
87340e98 TH |
2671 | unsigned int output_len = p - rbuf - 2; |
2672 | ||
1da177e4 | 2673 | rbuf[0] = output_len >> 8; |
87340e98 TH |
2674 | rbuf[1] = output_len; |
2675 | rbuf[3] |= dpofua; | |
00ac37f5 | 2676 | if (ebd) { |
87340e98 TH |
2677 | rbuf[7] = sizeof(sat_blk_desc); |
2678 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2679 | } |
1da177e4 | 2680 | } |
1da177e4 | 2681 | return 0; |
ae006510 DG |
2682 | |
2683 | invalid_fld: | |
0df10b84 | 2684 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2685 | return 1; |
2686 | ||
2687 | saving_not_supp: | |
06dbde5f | 2688 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2689 | /* "Saving parameters not supported" */ |
2690 | return 1; | |
1da177e4 LT |
2691 | } |
2692 | ||
2693 | /** | |
2694 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2695 | * @args: device IDENTIFY data / SCSI command of interest. | |
2696 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2697 | * |
2698 | * Simulate READ CAPACITY commands. | |
2699 | * | |
2700 | * LOCKING: | |
6a36261e | 2701 | * None. |
1da177e4 | 2702 | */ |
87340e98 | 2703 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2704 | { |
61d79a8e MP |
2705 | struct ata_device *dev = args->dev; |
2706 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2707 | u32 sector_size; /* physical sector size in bytes */ |
2708 | u8 log2_per_phys; | |
2709 | u16 lowest_aligned; | |
2710 | ||
2711 | sector_size = ata_id_logical_sector_size(dev->id); | |
2712 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2713 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 LT |
2714 | |
2715 | VPRINTK("ENTER\n"); | |
2716 | ||
1da177e4 | 2717 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2718 | if (last_lba >= 0xffffffffULL) |
2719 | last_lba = 0xffffffff; | |
0c144d0d | 2720 | |
1da177e4 | 2721 | /* sector count, 32-bit */ |
87340e98 TH |
2722 | rbuf[0] = last_lba >> (8 * 3); |
2723 | rbuf[1] = last_lba >> (8 * 2); | |
2724 | rbuf[2] = last_lba >> (8 * 1); | |
2725 | rbuf[3] = last_lba; | |
1da177e4 LT |
2726 | |
2727 | /* sector size */ | |
295124dc GG |
2728 | rbuf[4] = sector_size >> (8 * 3); |
2729 | rbuf[5] = sector_size >> (8 * 2); | |
2730 | rbuf[6] = sector_size >> (8 * 1); | |
2731 | rbuf[7] = sector_size; | |
1da177e4 LT |
2732 | } else { |
2733 | /* sector count, 64-bit */ | |
87340e98 TH |
2734 | rbuf[0] = last_lba >> (8 * 7); |
2735 | rbuf[1] = last_lba >> (8 * 6); | |
2736 | rbuf[2] = last_lba >> (8 * 5); | |
2737 | rbuf[3] = last_lba >> (8 * 4); | |
2738 | rbuf[4] = last_lba >> (8 * 3); | |
2739 | rbuf[5] = last_lba >> (8 * 2); | |
2740 | rbuf[6] = last_lba >> (8 * 1); | |
2741 | rbuf[7] = last_lba; | |
1da177e4 LT |
2742 | |
2743 | /* sector size */ | |
295124dc GG |
2744 | rbuf[ 8] = sector_size >> (8 * 3); |
2745 | rbuf[ 9] = sector_size >> (8 * 2); | |
2746 | rbuf[10] = sector_size >> (8 * 1); | |
2747 | rbuf[11] = sector_size; | |
61d79a8e MP |
2748 | |
2749 | rbuf[12] = 0; | |
295124dc | 2750 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2751 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2752 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2753 | |
71d126fd AF |
2754 | if (ata_id_has_trim(args->id) && |
2755 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2756 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2757 | |
e61f7d1c MP |
2758 | if (ata_id_has_zero_after_trim(args->id) && |
2759 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2760 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2761 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2762 | } | |
e78db4df | 2763 | } |
6d1003ae HR |
2764 | if (ata_id_zoned_cap(args->id) || |
2765 | args->dev->class == ATA_DEV_ZAC) | |
2766 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2767 | } |
1da177e4 LT |
2768 | return 0; |
2769 | } | |
2770 | ||
2771 | /** | |
2772 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2773 | * @args: device IDENTIFY data / SCSI command of interest. | |
2774 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2775 | * |
2776 | * Simulate REPORT LUNS command. | |
2777 | * | |
2778 | * LOCKING: | |
cca3974e | 2779 | * spin_lock_irqsave(host lock) |
1da177e4 | 2780 | */ |
87340e98 | 2781 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2782 | { |
2783 | VPRINTK("ENTER\n"); | |
2784 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ | |
2785 | ||
2786 | return 0; | |
2787 | } | |
2788 | ||
77853bf2 | 2789 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2790 | { |
74e6c8c3 | 2791 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2792 | /* FIXME: not quite right; we don't want the |
2793 | * translation of taskfile registers into | |
2794 | * a sense descriptors, since that's only | |
2795 | * correct for ATA, not ATAPI | |
2796 | */ | |
750426aa | 2797 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2798 | } |
a939c963 | 2799 | |
2aa8f5d6 | 2800 | ata_qc_done(qc); |
c6e6e666 | 2801 | } |
a939c963 | 2802 | |
c6e6e666 JG |
2803 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2804 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2805 | { | |
2806 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2807 | } | |
2808 | ||
2809 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2810 | { | |
2811 | struct ata_port *ap = qc->ap; | |
2812 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2813 | ||
2814 | DPRINTK("ATAPI request sense\n"); | |
a939c963 | 2815 | |
7ccd720d | 2816 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2817 | |
127102ae | 2818 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2819 | if (ap->ops->sff_tf_read) |
2820 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2821 | #endif |
c6e6e666 JG |
2822 | |
2823 | /* fill these in, for the case where they are -not- overwritten */ | |
2824 | cmd->sense_buffer[0] = 0x70; | |
2825 | cmd->sense_buffer[2] = qc->tf.feature >> 4; | |
2826 | ||
2827 | ata_qc_reinit(qc); | |
2828 | ||
93f8fecb | 2829 | /* setup sg table and init transfer direction */ |
cadb7345 | 2830 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2831 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2832 | qc->dma_dir = DMA_FROM_DEVICE; |
2833 | ||
6e7846e9 | 2834 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2835 | qc->cdb[0] = REQUEST_SENSE; |
2836 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2837 | ||
2838 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2839 | qc->tf.command = ATA_CMD_PACKET; | |
2840 | ||
c6e6e666 | 2841 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2842 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2843 | qc->tf.feature |= ATAPI_PKT_DMA; |
2844 | } else { | |
0dc36888 | 2845 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2846 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2847 | qc->tf.lbah = 0; | |
c6e6e666 | 2848 | } |
a939c963 JG |
2849 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2850 | ||
c6e6e666 | 2851 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2852 | |
8e0e694a | 2853 | ata_qc_issue(qc); |
a939c963 JG |
2854 | |
2855 | DPRINTK("EXIT\n"); | |
2856 | } | |
2857 | ||
aa18da8b CH |
2858 | /* |
2859 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2860 | * deviate from the spec WRT response data format. If SCSI version is | |
2861 | * reported as zero like normal, then we make the following fixups: | |
2862 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2863 | * modern device. | |
2864 | * 2) Ensure response data format / ATAPI information are always correct. | |
2865 | */ | |
2866 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2867 | { | |
2868 | u8 buf[4]; | |
2869 | ||
2870 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2871 | if (buf[2] == 0) { | |
2872 | buf[2] = 0x5; | |
2873 | buf[3] = 0x32; | |
2874 | } | |
2875 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2876 | } | |
2877 | ||
77853bf2 | 2878 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2879 | { |
2880 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2881 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2882 | |
a7dac447 | 2883 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
e12669e7 | 2884 | |
246619da TH |
2885 | /* handle completion from new EH */ |
2886 | if (unlikely(qc->ap->ops->error_handler && | |
2887 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2888 | ||
2889 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2890 | /* FIXME: not quite right; we don't want the | |
2891 | * translation of taskfile registers into a | |
2892 | * sense descriptors, since that's only | |
2893 | * correct for ATA, not ATAPI | |
2894 | */ | |
750426aa | 2895 | ata_gen_passthru_sense(qc); |
246619da TH |
2896 | } |
2897 | ||
22aac089 TH |
2898 | /* SCSI EH automatically locks door if sdev->locked is |
2899 | * set. Sometimes door lock request continues to | |
2900 | * fail, for example, when no media is present. This | |
2901 | * creates a loop - SCSI EH issues door lock which | |
2902 | * fails and gets invoked again to acquire sense data | |
2903 | * for the failed command. | |
2904 | * | |
2905 | * If door lock fails, always clear sdev->locked to | |
2906 | * avoid this infinite loop. | |
2a5f07b5 TH |
2907 | * |
2908 | * This may happen before SCSI scan is complete. Make | |
2909 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2910 | */ |
2a5f07b5 | 2911 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2912 | qc->dev->sdev->locked = 0; |
2913 | ||
246619da | 2914 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2915 | ata_qc_done(qc); |
246619da TH |
2916 | return; |
2917 | } | |
2918 | ||
2919 | /* successful completion or old EH failure path */ | |
a7dac447 | 2920 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2921 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2922 | atapi_request_sense(qc); |
77853bf2 | 2923 | return; |
74e6c8c3 | 2924 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2925 | /* FIXME: not quite right; we don't want the |
2926 | * translation of taskfile registers into | |
2927 | * a sense descriptors, since that's only | |
2928 | * correct for ATA, not ATAPI | |
2929 | */ | |
750426aa | 2930 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2931 | } else { |
aa18da8b CH |
2932 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) |
2933 | atapi_fixup_inquiry(cmd); | |
1da177e4 LT |
2934 | cmd->result = SAM_STAT_GOOD; |
2935 | } | |
2936 | ||
2aa8f5d6 | 2937 | ata_qc_done(qc); |
1da177e4 LT |
2938 | } |
2939 | /** | |
2940 | * atapi_xlat - Initialize PACKET taskfile | |
2941 | * @qc: command structure to be initialized | |
1da177e4 LT |
2942 | * |
2943 | * LOCKING: | |
cca3974e | 2944 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2945 | * |
2946 | * RETURNS: | |
2947 | * Zero on success, non-zero on failure. | |
2948 | */ | |
ad706991 | 2949 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2950 | { |
542b1444 | 2951 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2952 | struct ata_device *dev = qc->dev; |
542b1444 | 2953 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2954 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2955 | unsigned int nbytes; |
1da177e4 | 2956 | |
2e5704f6 TH |
2957 | memset(qc->cdb, 0, dev->cdb_len); |
2958 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2959 | |
2960 | qc->complete_fn = atapi_qc_complete; | |
2961 | ||
2962 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2963 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 LT |
2964 | qc->tf.flags |= ATA_TFLAG_WRITE; |
2965 | DPRINTK("direction: write\n"); | |
2966 | } | |
2967 | ||
2968 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2969 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2970 | |
2971 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2972 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2973 | using_pio = 1; |
1da177e4 | 2974 | |
e190222d TH |
2975 | /* Some controller variants snoop this value for Packet |
2976 | * transfers to do state machine and FIFO management. Thus we | |
2977 | * want to set it properly, and for DMA where it is | |
2978 | * effectively meaningless. | |
2979 | */ | |
aacda375 | 2980 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2981 | |
e190222d TH |
2982 | /* Most ATAPI devices which honor transfer chunk size don't |
2983 | * behave according to the spec when odd chunk size which | |
2984 | * matches the transfer length is specified. If the number of | |
2985 | * bytes to transfer is 2n+1. According to the spec, what | |
2986 | * should happen is to indicate that 2n+1 is going to be | |
2987 | * transferred and transfer 2n+2 bytes where the last byte is | |
2988 | * padding. | |
2989 | * | |
2990 | * In practice, this doesn't happen. ATAPI devices first | |
2991 | * indicate and transfer 2n bytes and then indicate and | |
2992 | * transfer 2 bytes where the last byte is padding. | |
2993 | * | |
2994 | * This inconsistency confuses several controllers which | |
2995 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2996 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2997 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2998 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2999 | * FISes are aligned to 4 bytes. This causes data corruption | |
3000 | * and buffer overrun. | |
3001 | * | |
3002 | * Always setting nbytes to even number solves this problem | |
3003 | * because then ATAPI devices don't have to split data at 2n | |
3004 | * boundaries. | |
3005 | */ | |
3006 | if (nbytes & 0x1) | |
3007 | nbytes++; | |
3008 | ||
2db78dd3 AC |
3009 | qc->tf.lbam = (nbytes & 0xFF); |
3010 | qc->tf.lbah = (nbytes >> 8); | |
3011 | ||
5895ef9a TH |
3012 | if (nodata) |
3013 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
3014 | else if (using_pio) | |
3015 | qc->tf.protocol = ATAPI_PROT_PIO; | |
3016 | else { | |
e00f1ff3 | 3017 | /* DMA data xfer */ |
0dc36888 | 3018 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
3019 | qc->tf.feature |= ATAPI_PKT_DMA; |
3020 | ||
91163006 TH |
3021 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
3022 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 3023 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 3024 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
3025 | } |
3026 | ||
2db78dd3 AC |
3027 | |
3028 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
3029 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
3030 | return 0; |
3031 | } | |
3032 | ||
2dcb407e | 3033 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
ab5b3a5b | 3034 | { |
071f44b1 | 3035 | if (!sata_pmp_attached(ap)) { |
59a5e266 DC |
3036 | if (likely(devno >= 0 && |
3037 | devno < ata_link_max_devices(&ap->link))) | |
41bda9c9 TH |
3038 | return &ap->link.device[devno]; |
3039 | } else { | |
59a5e266 DC |
3040 | if (likely(devno >= 0 && |
3041 | devno < ap->nr_pmp_links)) | |
41bda9c9 TH |
3042 | return &ap->pmp_link[devno].device[0]; |
3043 | } | |
3044 | ||
ab5b3a5b TH |
3045 | return NULL; |
3046 | } | |
3047 | ||
2dcb407e JG |
3048 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
3049 | const struct scsi_device *scsidev) | |
ab5b3a5b | 3050 | { |
41bda9c9 TH |
3051 | int devno; |
3052 | ||
ab5b3a5b | 3053 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 3054 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
3055 | if (unlikely(scsidev->channel || scsidev->lun)) |
3056 | return NULL; | |
3057 | devno = scsidev->id; | |
3058 | } else { | |
3059 | if (unlikely(scsidev->id || scsidev->lun)) | |
3060 | return NULL; | |
3061 | devno = scsidev->channel; | |
3062 | } | |
ab5b3a5b | 3063 | |
41bda9c9 | 3064 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
3065 | } |
3066 | ||
1da177e4 LT |
3067 | /** |
3068 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
3069 | * @ap: ATA port to which the device is attached | |
3070 | * @scsidev: SCSI device from which we derive the ATA device | |
3071 | * | |
3072 | * Given various information provided in struct scsi_cmnd, | |
3073 | * map that onto an ATA bus, and using that mapping | |
3074 | * determine which ata_device is associated with the | |
3075 | * SCSI command to be sent. | |
3076 | * | |
3077 | * LOCKING: | |
cca3974e | 3078 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
3079 | * |
3080 | * RETURNS: | |
3081 | * Associated ATA device, or %NULL if not found. | |
3082 | */ | |
1da177e4 | 3083 | static struct ata_device * |
057ace5e | 3084 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 3085 | { |
ab5b3a5b | 3086 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 3087 | |
2486fa56 | 3088 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
3089 | return NULL; |
3090 | ||
1da177e4 LT |
3091 | return dev; |
3092 | } | |
3093 | ||
b095518e JG |
3094 | /* |
3095 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
3096 | * @byte1: Byte 1 from pass-thru CDB. | |
3097 | * | |
3098 | * RETURNS: | |
3099 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
3100 | */ | |
3101 | static u8 | |
3102 | ata_scsi_map_proto(u8 byte1) | |
3103 | { | |
3104 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
3105 | case 3: /* Non-data */ |
3106 | return ATA_PROT_NODATA; | |
3107 | ||
3108 | case 6: /* DMA */ | |
3109 | case 10: /* UDMA Data-in */ | |
3110 | case 11: /* UDMA Data-Out */ | |
3111 | return ATA_PROT_DMA; | |
3112 | ||
3113 | case 4: /* PIO Data-in */ | |
3114 | case 5: /* PIO Data-out */ | |
3115 | return ATA_PROT_PIO; | |
3116 | ||
ee7fb331 VK |
3117 | case 12: /* FPDMA */ |
3118 | return ATA_PROT_NCQ; | |
3119 | ||
2dcb407e JG |
3120 | case 0: /* Hard Reset */ |
3121 | case 1: /* SRST */ | |
3122 | case 8: /* Device Diagnostic */ | |
3123 | case 9: /* Device Reset */ | |
3124 | case 7: /* DMA Queued */ | |
2dcb407e JG |
3125 | case 15: /* Return Response Info */ |
3126 | default: /* Reserved */ | |
3127 | break; | |
b095518e JG |
3128 | } |
3129 | ||
3130 | return ATA_PROT_UNKNOWN; | |
3131 | } | |
3132 | ||
3133 | /** | |
3134 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
3135 | * @qc: command structure to be initialized | |
b095518e | 3136 | * |
b1ffbf85 | 3137 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
3138 | * |
3139 | * RETURNS: | |
3140 | * Zero on success, non-zero on failure. | |
3141 | */ | |
ad706991 | 3142 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
3143 | { |
3144 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 3145 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 3146 | struct ata_device *dev = qc->dev; |
ad706991 | 3147 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 3148 | u16 fp; |
b1ffbf85 | 3149 | u16 cdb_offset = 0; |
b095518e | 3150 | |
b1ffbf85 MI |
3151 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
3152 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
3153 | cdb_offset = 9; | |
3154 | ||
3155 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
3156 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 3157 | fp = 1; |
9a405257 | 3158 | goto invalid_fld; |
bcfc867d | 3159 | } |
8190bdb9 | 3160 | |
b1ffbf85 | 3161 | if (ata_is_ncq(tf->protocol) && (cdb[2 + cdb_offset] & 0x3) == 0) |
5b844b63 HR |
3162 | tf->protocol = ATA_PROT_NCQ_NODATA; |
3163 | ||
5f8e7f17 VK |
3164 | /* enable LBA */ |
3165 | tf->flags |= ATA_TFLAG_LBA; | |
3166 | ||
b095518e JG |
3167 | /* |
3168 | * 12 and 16 byte CDBs use different offsets to | |
3169 | * provide the various register values. | |
3170 | */ | |
542b1444 | 3171 | if (cdb[0] == ATA_16) { |
b095518e JG |
3172 | /* |
3173 | * 16-byte CDB - may contain extended commands. | |
3174 | * | |
3175 | * If that is the case, copy the upper byte register values. | |
3176 | */ | |
542b1444 TH |
3177 | if (cdb[1] & 0x01) { |
3178 | tf->hob_feature = cdb[3]; | |
3179 | tf->hob_nsect = cdb[5]; | |
3180 | tf->hob_lbal = cdb[7]; | |
3181 | tf->hob_lbam = cdb[9]; | |
3182 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
3183 | tf->flags |= ATA_TFLAG_LBA48; |
3184 | } else | |
3185 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3186 | ||
3187 | /* | |
3188 | * Always copy low byte, device and command registers. | |
3189 | */ | |
542b1444 TH |
3190 | tf->feature = cdb[4]; |
3191 | tf->nsect = cdb[6]; | |
3192 | tf->lbal = cdb[8]; | |
3193 | tf->lbam = cdb[10]; | |
3194 | tf->lbah = cdb[12]; | |
3195 | tf->device = cdb[13]; | |
3196 | tf->command = cdb[14]; | |
b1ffbf85 | 3197 | } else if (cdb[0] == ATA_12) { |
b095518e JG |
3198 | /* |
3199 | * 12-byte CDB - incapable of extended commands. | |
3200 | */ | |
3201 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3202 | ||
542b1444 TH |
3203 | tf->feature = cdb[3]; |
3204 | tf->nsect = cdb[4]; | |
3205 | tf->lbal = cdb[5]; | |
3206 | tf->lbam = cdb[6]; | |
3207 | tf->lbah = cdb[7]; | |
3208 | tf->device = cdb[8]; | |
3209 | tf->command = cdb[9]; | |
b1ffbf85 MI |
3210 | } else { |
3211 | /* | |
3212 | * 32-byte CDB - may contain extended command fields. | |
3213 | * | |
3214 | * If that is the case, copy the upper byte register values. | |
3215 | */ | |
3216 | if (cdb[10] & 0x01) { | |
3217 | tf->hob_feature = cdb[20]; | |
3218 | tf->hob_nsect = cdb[22]; | |
3219 | tf->hob_lbal = cdb[16]; | |
3220 | tf->hob_lbam = cdb[15]; | |
3221 | tf->hob_lbah = cdb[14]; | |
3222 | tf->flags |= ATA_TFLAG_LBA48; | |
3223 | } else | |
3224 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3225 | ||
3226 | tf->feature = cdb[21]; | |
3227 | tf->nsect = cdb[23]; | |
3228 | tf->lbal = cdb[19]; | |
3229 | tf->lbam = cdb[18]; | |
3230 | tf->lbah = cdb[17]; | |
3231 | tf->device = cdb[24]; | |
3232 | tf->command = cdb[25]; | |
3233 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
b095518e | 3234 | } |
fa4453c4 | 3235 | |
179b310a HR |
3236 | /* For NCQ commands copy the tag value */ |
3237 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 3238 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 3239 | |
fa4453c4 AL |
3240 | /* enforce correct master/slave bit */ |
3241 | tf->device = dev->devno ? | |
3242 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 3243 | |
bd30add8 | 3244 | switch (tf->command) { |
295124dc | 3245 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
3246 | case ATA_CMD_READ_LONG: |
3247 | case ATA_CMD_READ_LONG_ONCE: | |
3248 | case ATA_CMD_WRITE_LONG: | |
3249 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
3250 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
3251 | fp = 1; | |
bd30add8 | 3252 | goto invalid_fld; |
bcfc867d | 3253 | } |
bd30add8 | 3254 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
3255 | break; |
3256 | ||
3257 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
3258 | case ATA_CMD_CFA_WRITE_NE: | |
3259 | case ATA_CMD_CFA_TRANS_SECT: | |
3260 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
3261 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
3262 | case ATA_CMD_READ: | |
3263 | case ATA_CMD_READ_EXT: | |
3264 | case ATA_CMD_READ_QUEUED: | |
3265 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
3266 | case ATA_CMD_FPDMA_READ: | |
3267 | case ATA_CMD_READ_MULTI: | |
3268 | case ATA_CMD_READ_MULTI_EXT: | |
3269 | case ATA_CMD_PIO_READ: | |
3270 | case ATA_CMD_PIO_READ_EXT: | |
3271 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
3272 | case ATA_CMD_READ_STREAM_EXT: | |
3273 | case ATA_CMD_VERIFY: | |
3274 | case ATA_CMD_VERIFY_EXT: | |
3275 | case ATA_CMD_WRITE: | |
3276 | case ATA_CMD_WRITE_EXT: | |
3277 | case ATA_CMD_WRITE_FUA_EXT: | |
3278 | case ATA_CMD_WRITE_QUEUED: | |
3279 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3280 | case ATA_CMD_FPDMA_WRITE: | |
3281 | case ATA_CMD_WRITE_MULTI: | |
3282 | case ATA_CMD_WRITE_MULTI_EXT: | |
3283 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3284 | case ATA_CMD_PIO_WRITE: | |
3285 | case ATA_CMD_PIO_WRITE_EXT: | |
3286 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3287 | case ATA_CMD_WRITE_STREAM_EXT: | |
3288 | qc->sect_size = scmd->device->sector_size; | |
3289 | break; | |
3290 | ||
3291 | /* Everything else uses 512 byte "sectors" */ | |
3292 | default: | |
3293 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3294 | } |
3295 | ||
3296 | /* | |
3297 | * Set flags so that all registers will be written, pass on | |
3298 | * write indication (used for PIO/DMA setup), result TF is | |
3299 | * copied back and we don't whine too much about its failure. | |
3300 | */ | |
bc496ed0 | 3301 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3302 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3303 | tf->flags |= ATA_TFLAG_WRITE; | |
3304 | ||
3305 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3306 | ||
3307 | /* | |
3308 | * Set transfer length. | |
3309 | * | |
3310 | * TODO: find out if we need to do more here to | |
3311 | * cover scatter/gather case. | |
3312 | */ | |
3313 | ata_qc_set_pc_nbytes(qc); | |
3314 | ||
3315 | /* We may not issue DMA commands if no DMA mode is set */ | |
bcfc867d HR |
3316 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) { |
3317 | fp = 1; | |
bd30add8 | 3318 | goto invalid_fld; |
2c1ec6fd EB |
3319 | } |
3320 | ||
3321 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3322 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3323 | fp = 1; | |
3324 | goto invalid_fld; | |
bcfc867d | 3325 | } |
bd30add8 | 3326 | |
1dce589c | 3327 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3328 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3329 | fp = 1; | |
1dce589c | 3330 | goto invalid_fld; |
bcfc867d | 3331 | } |
1dce589c AL |
3332 | |
3333 | if (is_multi_taskfile(tf)) { | |
3334 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3335 | ||
3336 | /* compare the passed through multi_count | |
3337 | * with the cached multi_count of libata | |
3338 | */ | |
3339 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3340 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3341 | multi_count); | |
d26fc955 | 3342 | } |
1dce589c | 3343 | |
b095518e JG |
3344 | /* |
3345 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3346 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3347 | * by an update to hardware-specific registers for each | |
3348 | * controller (i.e. the reason for ->set_piomode(), | |
3349 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3350 | */ | |
bd30add8 | 3351 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3352 | tf->feature == SETFEATURES_XFER) { |
3353 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3354 | goto invalid_fld; |
bcfc867d | 3355 | } |
b095518e JG |
3356 | |
3357 | /* | |
bd30add8 TH |
3358 | * Filter TPM commands by default. These provide an |
3359 | * essentially uncontrolled encrypted "back door" between | |
3360 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3361 | * have a real reason for wanting to use them. This ensures | |
3362 | * that installed software cannot easily mess stuff up without | |
3363 | * user intent. DVR type users will probably ship with this enabled | |
3364 | * for movie content management. | |
b095518e | 3365 | * |
bd30add8 TH |
3366 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3367 | * for this and should do in future but that it is not sufficient as | |
3368 | * DCS is an optional feature set. Thus we also do the software filter | |
3369 | * so that we comply with the TC consortium stated goal that the user | |
3370 | * can turn off TC features of their system. | |
b095518e | 3371 | */ |
bcfc867d HR |
3372 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3373 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3374 | goto invalid_fld; |
bcfc867d | 3375 | } |
e61e0672 | 3376 | |
b095518e | 3377 | return 0; |
9a405257 TH |
3378 | |
3379 | invalid_fld: | |
0df10b84 | 3380 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3381 | return 1; |
b095518e JG |
3382 | } |
3383 | ||
9379e6b8 ST |
3384 | /** |
3385 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3386 | * @cmd: SCSI command being translated | |
ef2d7392 | 3387 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3388 | * @sector: Starting sector |
7b203094 | 3389 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3390 | * |
3391 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3392 | * descriptor. | |
3393 | * | |
3394 | * Upto 64 entries of the format: | |
3395 | * 63:48 Range Length | |
3396 | * 47:0 LBA | |
3397 | * | |
3398 | * Range Length of 0 is ignored. | |
3399 | * LBA's should be sorted order and not overlap. | |
3400 | * | |
3401 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3402 | * |
3403 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3404 | */ |
ef2d7392 ST |
3405 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3406 | u64 sector, u32 count) | |
3407 | { | |
3408 | struct scsi_device *sdp = cmd->device; | |
3409 | size_t len = sdp->sector_size; | |
3410 | size_t r; | |
3411 | __le64 *buf; | |
3412 | u32 i = 0; | |
9379e6b8 ST |
3413 | unsigned long flags; |
3414 | ||
ef2d7392 ST |
3415 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3416 | ||
3417 | if (len > ATA_SCSI_RBUF_SIZE) | |
3418 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3419 | |
3420 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3421 | buf = ((void *)ata_scsi_rbuf); |
3422 | memset(buf, 0, len); | |
3423 | while (i < trmax) { | |
9379e6b8 ST |
3424 | u64 entry = sector | |
3425 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3426 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3427 | if (count <= 0xffff) |
3428 | break; | |
3429 | count -= 0xffff; | |
3430 | sector += 0xffff; | |
3431 | } | |
ef2d7392 | 3432 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3433 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3434 | ||
ef2d7392 | 3435 | return r; |
9379e6b8 ST |
3436 | } |
3437 | ||
7b203094 ST |
3438 | /** |
3439 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3440 | * @qc: Command to be translated | |
3441 | * | |
3442 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3443 | * an SCT Write Same command. | |
6baf20bc MCC |
3444 | * Based on WRITE SAME has the UNMAP flag: |
3445 | * | |
3446 | * - When set translate to DSM TRIM | |
3447 | * - When clear translate to SCT Write Same | |
7b203094 | 3448 | */ |
18f0f978 CH |
3449 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3450 | { | |
3451 | struct ata_taskfile *tf = &qc->tf; | |
3452 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3453 | struct scsi_device *sdp = scmd->device; |
3454 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3455 | struct ata_device *dev = qc->dev; |
3456 | const u8 *cdb = scmd->cmnd; | |
3457 | u64 block; | |
3458 | u32 n_block; | |
ef2d7392 | 3459 | const u32 trmax = len >> 3; |
18f0f978 | 3460 | u32 size; |
bcfc867d | 3461 | u16 fp; |
0df10b84 | 3462 | u8 bp = 0xff; |
7b203094 | 3463 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3464 | |
3465 | /* we may not issue DMA commands if no DMA mode is set */ | |
3466 | if (unlikely(!dev->dma_mode)) | |
bcfc867d | 3467 | goto invalid_opcode; |
18f0f978 | 3468 | |
c6ade20f CH |
3469 | /* |
3470 | * We only allow sending this command through the block layer, | |
3471 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3472 | * memory for SG_IO commands. | |
3473 | */ | |
3474 | if (unlikely(blk_rq_is_passthrough(scmd->request))) | |
3475 | goto invalid_opcode; | |
3476 | ||
bcfc867d HR |
3477 | if (unlikely(scmd->cmd_len < 16)) { |
3478 | fp = 15; | |
18f0f978 | 3479 | goto invalid_fld; |
bcfc867d | 3480 | } |
18f0f978 CH |
3481 | scsi_16_lba_len(cdb, &block, &n_block); |
3482 | ||
63ccc191 CH |
3483 | if (!unmap || |
3484 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3485 | !ata_id_has_trim(dev->id)) { | |
3486 | fp = 1; | |
3487 | bp = 3; | |
3488 | goto invalid_fld; | |
3489 | } | |
3490 | /* If the request is too large the cmd is invalid */ | |
3491 | if (n_block > 0xffff * trmax) { | |
3492 | fp = 2; | |
3493 | goto invalid_fld; | |
bcfc867d | 3494 | } |
18f0f978 CH |
3495 | |
3496 | /* | |
3497 | * WRITE SAME always has a sector sized buffer as payload, this | |
3498 | * should never be a multiple entry S/G list. | |
3499 | */ | |
3500 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3501 | goto invalid_param_len; |
18f0f978 | 3502 | |
ef2d7392 ST |
3503 | /* |
3504 | * size must match sector size in bytes | |
3505 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3506 | * is defined as number of 512 byte blocks to be transferred. | |
3507 | */ | |
87fb6c31 | 3508 | |
63ccc191 CH |
3509 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3510 | if (size != len) | |
3511 | goto invalid_param_len; | |
3512 | ||
3513 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3514 | /* Newer devices support queued TRIM commands */ | |
3515 | tf->protocol = ATA_PROT_NCQ; | |
3516 | tf->command = ATA_CMD_FPDMA_SEND; | |
3517 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3518 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3519 | tf->hob_feature = (size / 512) >> 8; |
3520 | tf->feature = size / 512; | |
3521 | ||
3522 | tf->auxiliary = 1; | |
3523 | } else { | |
7b203094 | 3524 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3525 | tf->hob_feature = 0; |
3526 | tf->feature = ATA_DSM_TRIM; | |
3527 | tf->hob_nsect = (size / 512) >> 8; | |
3528 | tf->nsect = size / 512; | |
3529 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3530 | } |
3531 | ||
18f0f978 CH |
3532 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3533 | ATA_TFLAG_WRITE; | |
3534 | ||
3535 | ata_qc_set_pc_nbytes(qc); | |
3536 | ||
3537 | return 0; | |
3538 | ||
bcfc867d | 3539 | invalid_fld: |
0df10b84 | 3540 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3541 | return 1; |
3542 | invalid_param_len: | |
3543 | /* "Parameter list length error" */ | |
3544 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3545 | return 1; | |
3546 | invalid_opcode: | |
3547 | /* "Invalid command operation code" */ | |
3548 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3549 | return 1; |
3550 | } | |
3551 | ||
7b203094 ST |
3552 | /** |
3553 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3554 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3555 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3556 | * | |
3557 | * Yields a subset to satisfy scsi_report_opcode() | |
3558 | * | |
3559 | * LOCKING: | |
3560 | * spin_lock_irqsave(host lock) | |
3561 | */ | |
3562 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3563 | { | |
3564 | struct ata_device *dev = args->dev; | |
3565 | u8 *cdb = args->cmd->cmnd; | |
3566 | u8 supported = 0; | |
3567 | unsigned int err = 0; | |
3568 | ||
3569 | if (cdb[2] != 1) { | |
3570 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); | |
3571 | err = 2; | |
3572 | goto out; | |
3573 | } | |
3574 | switch (cdb[3]) { | |
3575 | case INQUIRY: | |
3576 | case MODE_SENSE: | |
3577 | case MODE_SENSE_10: | |
3578 | case READ_CAPACITY: | |
3579 | case SERVICE_ACTION_IN_16: | |
3580 | case REPORT_LUNS: | |
3581 | case REQUEST_SENSE: | |
3582 | case SYNCHRONIZE_CACHE: | |
3583 | case REZERO_UNIT: | |
3584 | case SEEK_6: | |
3585 | case SEEK_10: | |
3586 | case TEST_UNIT_READY: | |
3587 | case SEND_DIAGNOSTIC: | |
3588 | case MAINTENANCE_IN: | |
3589 | case READ_6: | |
3590 | case READ_10: | |
3591 | case READ_16: | |
3592 | case WRITE_6: | |
3593 | case WRITE_10: | |
3594 | case WRITE_16: | |
3595 | case ATA_12: | |
3596 | case ATA_16: | |
3597 | case VERIFY: | |
3598 | case VERIFY_16: | |
3599 | case MODE_SELECT: | |
3600 | case MODE_SELECT_10: | |
3601 | case START_STOP: | |
3602 | supported = 3; | |
3603 | break; | |
7b203094 ST |
3604 | case ZBC_IN: |
3605 | case ZBC_OUT: | |
3606 | if (ata_id_zoned_cap(dev->id) || | |
3607 | dev->class == ATA_DEV_ZAC) | |
3608 | supported = 3; | |
3609 | break; | |
818831c8 CH |
3610 | case SECURITY_PROTOCOL_IN: |
3611 | case SECURITY_PROTOCOL_OUT: | |
3612 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3613 | supported = 3; | |
3614 | break; | |
7b203094 ST |
3615 | default: |
3616 | break; | |
3617 | } | |
3618 | out: | |
3619 | rbuf[1] = supported; /* supported */ | |
3620 | return err; | |
3621 | } | |
3622 | ||
28a3fc22 HR |
3623 | /** |
3624 | * ata_scsi_report_zones_complete - convert ATA output | |
3625 | * @qc: command structure returning the data | |
3626 | * | |
3627 | * Convert T-13 little-endian field representation into | |
3628 | * T-10 big-endian field representation. | |
3629 | * What a mess. | |
3630 | */ | |
3631 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3632 | { | |
3633 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3634 | struct sg_mapping_iter miter; | |
3635 | unsigned long flags; | |
3636 | unsigned int bytes = 0; | |
3637 | ||
3638 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3639 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3640 | ||
3641 | local_irq_save(flags); | |
3642 | while (sg_miter_next(&miter)) { | |
3643 | unsigned int offset = 0; | |
3644 | ||
3645 | if (bytes == 0) { | |
3646 | char *hdr; | |
3647 | u32 list_length; | |
3648 | u64 max_lba, opt_lba; | |
3649 | u16 same; | |
3650 | ||
3651 | /* Swizzle header */ | |
3652 | hdr = miter.addr; | |
3653 | list_length = get_unaligned_le32(&hdr[0]); | |
3654 | same = get_unaligned_le16(&hdr[4]); | |
3655 | max_lba = get_unaligned_le64(&hdr[8]); | |
3656 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3657 | put_unaligned_be32(list_length, &hdr[0]); | |
3658 | hdr[4] = same & 0xf; | |
3659 | put_unaligned_be64(max_lba, &hdr[8]); | |
3660 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3661 | offset += 64; | |
3662 | bytes += 64; | |
3663 | } | |
3664 | while (offset < miter.length) { | |
3665 | char *rec; | |
3666 | u8 cond, type, non_seq, reset; | |
3667 | u64 size, start, wp; | |
3668 | ||
3669 | /* Swizzle zone descriptor */ | |
3670 | rec = miter.addr + offset; | |
3671 | type = rec[0] & 0xf; | |
3672 | cond = (rec[1] >> 4) & 0xf; | |
3673 | non_seq = (rec[1] & 2); | |
3674 | reset = (rec[1] & 1); | |
3675 | size = get_unaligned_le64(&rec[8]); | |
3676 | start = get_unaligned_le64(&rec[16]); | |
3677 | wp = get_unaligned_le64(&rec[24]); | |
3678 | rec[0] = type; | |
3679 | rec[1] = (cond << 4) | non_seq | reset; | |
3680 | put_unaligned_be64(size, &rec[8]); | |
3681 | put_unaligned_be64(start, &rec[16]); | |
3682 | put_unaligned_be64(wp, &rec[24]); | |
3683 | WARN_ON(offset + 64 > miter.length); | |
3684 | offset += 64; | |
3685 | bytes += 64; | |
3686 | } | |
3687 | } | |
3688 | sg_miter_stop(&miter); | |
3689 | local_irq_restore(flags); | |
3690 | ||
3691 | ata_scsi_qc_complete(qc); | |
3692 | } | |
3693 | ||
3694 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3695 | { | |
3696 | struct ata_taskfile *tf = &qc->tf; | |
3697 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3698 | const u8 *cdb = scmd->cmnd; | |
3699 | u16 sect, fp = (u16)-1; | |
3700 | u8 sa, options, bp = 0xff; | |
3701 | u64 block; | |
3702 | u32 n_block; | |
3703 | ||
3704 | if (unlikely(scmd->cmd_len < 16)) { | |
3705 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3706 | scmd->cmd_len); | |
3707 | fp = 15; | |
3708 | goto invalid_fld; | |
3709 | } | |
3710 | scsi_16_lba_len(cdb, &block, &n_block); | |
3711 | if (n_block != scsi_bufflen(scmd)) { | |
3712 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3713 | n_block, scsi_bufflen(scmd)); | |
3714 | goto invalid_param_len; | |
3715 | } | |
3716 | sa = cdb[1] & 0x1f; | |
3717 | if (sa != ZI_REPORT_ZONES) { | |
3718 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3719 | fp = 1; | |
3720 | goto invalid_fld; | |
3721 | } | |
3722 | /* | |
3723 | * ZAC allows only for transfers in 512 byte blocks, | |
3724 | * and uses a 16 bit value for the transfer count. | |
3725 | */ | |
3726 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3727 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3728 | goto invalid_param_len; | |
3729 | } | |
3730 | sect = n_block / 512; | |
3f17422b | 3731 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3732 | |
3733 | if (ata_ncq_enabled(qc->dev) && | |
3734 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3735 | tf->protocol = ATA_PROT_NCQ; | |
3736 | tf->command = ATA_CMD_FPDMA_RECV; | |
3737 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3738 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3739 | tf->feature = sect & 0xff; |
3740 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3741 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3742 | } else { |
3743 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3744 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3745 | tf->protocol = ATA_PROT_DMA; | |
3746 | tf->hob_feature = options; | |
3747 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3748 | tf->nsect = sect & 0xff; | |
3749 | } | |
3750 | tf->device = ATA_LBA; | |
3751 | tf->lbah = (block >> 16) & 0xff; | |
3752 | tf->lbam = (block >> 8) & 0xff; | |
3753 | tf->lbal = block & 0xff; | |
3754 | tf->hob_lbah = (block >> 40) & 0xff; | |
3755 | tf->hob_lbam = (block >> 32) & 0xff; | |
3756 | tf->hob_lbal = (block >> 24) & 0xff; | |
3757 | ||
3758 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3759 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3760 | ||
3761 | ata_qc_set_pc_nbytes(qc); | |
3762 | ||
3763 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3764 | ||
3765 | return 0; | |
3766 | ||
3767 | invalid_fld: | |
3768 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3769 | return 1; | |
3770 | ||
3771 | invalid_param_len: | |
3772 | /* "Parameter list length error" */ | |
3773 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3774 | return 1; | |
3775 | } | |
3776 | ||
27708a95 HR |
3777 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3778 | { | |
3779 | struct ata_taskfile *tf = &qc->tf; | |
3780 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3781 | struct ata_device *dev = qc->dev; | |
3782 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3783 | u8 all, sa; |
27708a95 HR |
3784 | u64 block; |
3785 | u32 n_block; | |
3786 | u16 fp = (u16)-1; | |
3787 | ||
3788 | if (unlikely(scmd->cmd_len < 16)) { | |
3789 | fp = 15; | |
3790 | goto invalid_fld; | |
3791 | } | |
3792 | ||
3793 | sa = cdb[1] & 0x1f; | |
3794 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3795 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3796 | fp = 1; | |
3797 | goto invalid_fld; | |
3798 | } | |
3799 | ||
3800 | scsi_16_lba_len(cdb, &block, &n_block); | |
3801 | if (n_block) { | |
3802 | /* | |
3803 | * ZAC MANAGEMENT OUT doesn't define any length | |
3804 | */ | |
3805 | goto invalid_param_len; | |
3806 | } | |
27708a95 | 3807 | |
2950cefa | 3808 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3809 | if (all) { |
3810 | /* | |
3811 | * Ignore the block address (zone ID) as defined by ZBC. | |
3812 | */ | |
3813 | block = 0; | |
3814 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3815 | /* |
3816 | * Block must be a valid zone ID (a zone start LBA). | |
3817 | */ | |
3818 | fp = 2; | |
3819 | goto invalid_fld; | |
3820 | } | |
27708a95 | 3821 | |
284b3b77 HR |
3822 | if (ata_ncq_enabled(qc->dev) && |
3823 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3824 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3825 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3826 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3827 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3828 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3829 | } else { |
3830 | tf->protocol = ATA_PROT_NODATA; | |
3831 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3832 | tf->feature = sa; | |
2950cefa | 3833 | tf->hob_feature = all; |
284b3b77 | 3834 | } |
27708a95 HR |
3835 | tf->lbah = (block >> 16) & 0xff; |
3836 | tf->lbam = (block >> 8) & 0xff; | |
3837 | tf->lbal = block & 0xff; | |
3838 | tf->hob_lbah = (block >> 40) & 0xff; | |
3839 | tf->hob_lbam = (block >> 32) & 0xff; | |
3840 | tf->hob_lbal = (block >> 24) & 0xff; | |
3841 | tf->device = ATA_LBA; | |
3842 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3843 | ||
3844 | return 0; | |
3845 | ||
18f0f978 | 3846 | invalid_fld: |
27708a95 HR |
3847 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3848 | return 1; | |
27708a95 HR |
3849 | invalid_param_len: |
3850 | /* "Parameter list length error" */ | |
3851 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3852 | return 1; |
3853 | } | |
3854 | ||
1b26d29c PB |
3855 | /** |
3856 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3857 | * @qc: Storage for translated ATA taskfile | |
3858 | * @buf: input buffer | |
3859 | * @len: number of valid bytes in the input buffer | |
7780081c | 3860 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3861 | * |
3862 | * Prepare a taskfile to modify caching information for the device. | |
3863 | * | |
3864 | * LOCKING: | |
3865 | * None. | |
3866 | */ | |
3867 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3868 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3869 | { |
3870 | struct ata_taskfile *tf = &qc->tf; | |
3871 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3872 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3873 | u8 wce; |
7780081c | 3874 | int i; |
1b26d29c PB |
3875 | |
3876 | /* | |
3877 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3878 | * in mpage are off by 2 compared to buf. Same for len. | |
3879 | */ | |
3880 | ||
7780081c HR |
3881 | if (len != CACHE_MPAGE_LEN - 2) { |
3882 | if (len < CACHE_MPAGE_LEN - 2) | |
3883 | *fp = len; | |
3884 | else | |
3885 | *fp = CACHE_MPAGE_LEN - 2; | |
1b26d29c | 3886 | return -EINVAL; |
7780081c | 3887 | } |
1b26d29c PB |
3888 | |
3889 | wce = buf[0] & (1 << 2); | |
3890 | ||
3891 | /* | |
3892 | * Check that read-only bits are not modified. | |
3893 | */ | |
3894 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3895 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3896 | if (i == 0) | |
3897 | continue; | |
3898 | if (mpage[i + 2] != buf[i]) { | |
3899 | *fp = i; | |
3900 | return -EINVAL; | |
3901 | } | |
3902 | } | |
1b26d29c PB |
3903 | |
3904 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3905 | tf->protocol = ATA_PROT_NODATA; | |
3906 | tf->nsect = 0; | |
3907 | tf->command = ATA_CMD_SET_FEATURES; | |
3908 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3909 | return 0; | |
3910 | } | |
3911 | ||
06dbde5f HR |
3912 | /** |
3913 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3914 | * @qc: Storage for translated ATA taskfile | |
3915 | * @buf: input buffer | |
3916 | * @len: number of valid bytes in the input buffer | |
7780081c | 3917 | * @fp: out parameter for the failed field on error |
06dbde5f HR |
3918 | * |
3919 | * Prepare a taskfile to modify caching information for the device. | |
3920 | * | |
3921 | * LOCKING: | |
3922 | * None. | |
3923 | */ | |
3924 | static int ata_mselect_control(struct ata_queued_cmd *qc, | |
7780081c | 3925 | const u8 *buf, int len, u16 *fp) |
06dbde5f HR |
3926 | { |
3927 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3928 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3929 | u8 d_sense; |
7780081c | 3930 | int i; |
06dbde5f HR |
3931 | |
3932 | /* | |
3933 | * The first two bytes of def_control_mpage are a header, so offsets | |
3934 | * in mpage are off by 2 compared to buf. Same for len. | |
3935 | */ | |
3936 | ||
7780081c HR |
3937 | if (len != CONTROL_MPAGE_LEN - 2) { |
3938 | if (len < CONTROL_MPAGE_LEN - 2) | |
3939 | *fp = len; | |
3940 | else | |
3941 | *fp = CONTROL_MPAGE_LEN - 2; | |
06dbde5f | 3942 | return -EINVAL; |
7780081c | 3943 | } |
06dbde5f HR |
3944 | |
3945 | d_sense = buf[0] & (1 << 2); | |
3946 | ||
3947 | /* | |
3948 | * Check that read-only bits are not modified. | |
3949 | */ | |
f086b748 | 3950 | ata_msense_control(dev, mpage, false); |
7780081c HR |
3951 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3952 | if (i == 0) | |
3953 | continue; | |
3954 | if (mpage[2 + i] != buf[i]) { | |
3955 | *fp = i; | |
3956 | return -EINVAL; | |
3957 | } | |
3958 | } | |
06dbde5f HR |
3959 | if (d_sense & (1 << 2)) |
3960 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3961 | else | |
3962 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3963 | return 0; |
3964 | } | |
3965 | ||
1b26d29c | 3966 | /** |
01efd600 | 3967 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3968 | * @qc: Storage for translated ATA taskfile |
3969 | * | |
3970 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3971 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3972 | * There should be no block descriptor for other device types. | |
3973 | * | |
3974 | * LOCKING: | |
3975 | * spin_lock_irqsave(host lock) | |
3976 | */ | |
3977 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3978 | { | |
3979 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3980 | const u8 *cdb = scmd->cmnd; | |
3981 | const u8 *p; | |
3982 | u8 pg, spg; | |
3983 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
3984 | int len; | |
7780081c HR |
3985 | u16 fp = (u16)-1; |
3986 | u8 bp = 0xff; | |
1b26d29c PB |
3987 | |
3988 | VPRINTK("ENTER\n"); | |
3989 | ||
3990 | six_byte = (cdb[0] == MODE_SELECT); | |
3991 | if (six_byte) { | |
bcfc867d HR |
3992 | if (scmd->cmd_len < 5) { |
3993 | fp = 4; | |
1b26d29c | 3994 | goto invalid_fld; |
bcfc867d | 3995 | } |
1b26d29c PB |
3996 | |
3997 | len = cdb[4]; | |
3998 | hdr_len = 4; | |
3999 | } else { | |
bcfc867d HR |
4000 | if (scmd->cmd_len < 9) { |
4001 | fp = 8; | |
1b26d29c | 4002 | goto invalid_fld; |
bcfc867d | 4003 | } |
1b26d29c PB |
4004 | |
4005 | len = (cdb[7] << 8) + cdb[8]; | |
4006 | hdr_len = 8; | |
4007 | } | |
4008 | ||
4009 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
4010 | if ((cdb[1] & 0x11) != 0x10) { |
4011 | fp = 1; | |
0df10b84 | 4012 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 4013 | goto invalid_fld; |
bcfc867d | 4014 | } |
1b26d29c PB |
4015 | |
4016 | /* Test early for possible overrun. */ | |
4017 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
4018 | goto invalid_param_len; | |
4019 | ||
4020 | p = page_address(sg_page(scsi_sglist(scmd))); | |
4021 | ||
4022 | /* Move past header and block descriptors. */ | |
4023 | if (len < hdr_len) | |
4024 | goto invalid_param_len; | |
4025 | ||
4026 | if (six_byte) | |
4027 | bd_len = p[3]; | |
4028 | else | |
4029 | bd_len = (p[6] << 8) + p[7]; | |
4030 | ||
4031 | len -= hdr_len; | |
4032 | p += hdr_len; | |
4033 | if (len < bd_len) | |
4034 | goto invalid_param_len; | |
7780081c HR |
4035 | if (bd_len != 0 && bd_len != 8) { |
4036 | fp = (six_byte) ? 3 : 6; | |
4037 | fp += bd_len + hdr_len; | |
1b26d29c | 4038 | goto invalid_param; |
7780081c | 4039 | } |
1b26d29c PB |
4040 | |
4041 | len -= bd_len; | |
4042 | p += bd_len; | |
4043 | if (len == 0) | |
4044 | goto skip; | |
4045 | ||
4046 | /* Parse both possible formats for the mode page headers. */ | |
4047 | pg = p[0] & 0x3f; | |
4048 | if (p[0] & 0x40) { | |
4049 | if (len < 4) | |
4050 | goto invalid_param_len; | |
4051 | ||
4052 | spg = p[1]; | |
4053 | pg_len = (p[2] << 8) | p[3]; | |
4054 | p += 4; | |
4055 | len -= 4; | |
4056 | } else { | |
4057 | if (len < 2) | |
4058 | goto invalid_param_len; | |
4059 | ||
4060 | spg = 0; | |
4061 | pg_len = p[1]; | |
4062 | p += 2; | |
4063 | len -= 2; | |
4064 | } | |
4065 | ||
4066 | /* | |
4067 | * No mode subpages supported (yet) but asking for _all_ | |
4068 | * subpages may be valid | |
4069 | */ | |
7780081c HR |
4070 | if (spg && (spg != ALL_SUB_MPAGES)) { |
4071 | fp = (p[0] & 0x40) ? 1 : 0; | |
4072 | fp += hdr_len + bd_len; | |
1b26d29c | 4073 | goto invalid_param; |
7780081c | 4074 | } |
1b26d29c PB |
4075 | if (pg_len > len) |
4076 | goto invalid_param_len; | |
4077 | ||
4078 | switch (pg) { | |
4079 | case CACHE_MPAGE: | |
7780081c HR |
4080 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
4081 | fp += hdr_len + bd_len; | |
1b26d29c | 4082 | goto invalid_param; |
7780081c | 4083 | } |
1b26d29c | 4084 | break; |
06dbde5f | 4085 | case CONTROL_MPAGE: |
7780081c HR |
4086 | if (ata_mselect_control(qc, p, pg_len, &fp) < 0) { |
4087 | fp += hdr_len + bd_len; | |
06dbde5f | 4088 | goto invalid_param; |
535fd072 TY |
4089 | } else { |
4090 | goto skip; /* No ATA command to send */ | |
7780081c | 4091 | } |
1b26d29c | 4092 | break; |
1b26d29c | 4093 | default: /* invalid page code */ |
7780081c | 4094 | fp = bd_len + hdr_len; |
1b26d29c PB |
4095 | goto invalid_param; |
4096 | } | |
4097 | ||
4098 | /* | |
4099 | * Only one page has changeable data, so we only support setting one | |
4100 | * page at a time. | |
4101 | */ | |
4102 | if (len > pg_len) | |
4103 | goto invalid_param; | |
4104 | ||
4105 | return 0; | |
4106 | ||
4107 | invalid_fld: | |
0df10b84 | 4108 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
4109 | return 1; |
4110 | ||
4111 | invalid_param: | |
7780081c | 4112 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
4113 | return 1; |
4114 | ||
4115 | invalid_param_len: | |
4116 | /* "Parameter list length error" */ | |
06dbde5f | 4117 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
4118 | return 1; |
4119 | ||
4120 | skip: | |
4121 | scmd->result = SAM_STAT_GOOD; | |
4122 | return 1; | |
4123 | } | |
4124 | ||
818831c8 CH |
4125 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
4126 | { | |
4127 | if (len == 0) | |
4128 | return ATA_CMD_TRUSTED_NONDATA; | |
4129 | else if (send) | |
4130 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
4131 | else | |
4132 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
4133 | } | |
4134 | ||
4135 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
4136 | { | |
4137 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4138 | const u8 *cdb = scmd->cmnd; | |
4139 | struct ata_taskfile *tf = &qc->tf; | |
4140 | u8 secp = cdb[1]; | |
4141 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
4142 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
4143 | u32 len = get_unaligned_be32(&cdb[6]); | |
4144 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
4145 | ||
4146 | /* | |
4147 | * We don't support the ATA "security" protocol. | |
4148 | */ | |
4149 | if (secp == 0xef) { | |
4150 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
4151 | return 1; | |
4152 | } | |
4153 | ||
4154 | if (cdb[4] & 7) { /* INC_512 */ | |
4155 | if (len > 0xffff) { | |
4156 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4157 | return 1; | |
4158 | } | |
4159 | } else { | |
4160 | if (len > 0x01fffe00) { | |
4161 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4162 | return 1; | |
4163 | } | |
4164 | ||
4165 | /* convert to the sector-based ATA addressing */ | |
4166 | len = (len + 511) / 512; | |
4167 | } | |
4168 | ||
4169 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
4170 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
4171 | if (send) | |
4172 | tf->flags |= ATA_TFLAG_WRITE; | |
4173 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
4174 | tf->feature = secp; | |
4175 | tf->lbam = spsp & 0xff; | |
4176 | tf->lbah = spsp >> 8; | |
4177 | ||
4178 | if (len) { | |
4179 | tf->nsect = len & 0xff; | |
4180 | tf->lbal = len >> 8; | |
4181 | } else { | |
4182 | if (!send) | |
4183 | tf->lbah = (1 << 7); | |
4184 | } | |
4185 | ||
4186 | ata_qc_set_pc_nbytes(qc); | |
4187 | return 0; | |
4188 | } | |
4189 | ||
b1ffbf85 MI |
4190 | /** |
4191 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
4192 | * @qc: Command to be translated | |
4193 | * | |
4194 | * Translate a SCSI variable length CDB to specified commands. | |
4195 | * It checks a service action value in CDB to call corresponding handler. | |
4196 | * | |
4197 | * RETURNS: | |
4198 | * Zero on success, non-zero on failure | |
4199 | * | |
4200 | */ | |
4201 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
4202 | { | |
4203 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4204 | const u8 *cdb = scmd->cmnd; | |
4205 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
4206 | ||
4207 | /* | |
4208 | * if service action represents a ata pass-thru(32) command, | |
4209 | * then pass it to ata_scsi_pass_thru handler. | |
4210 | */ | |
4211 | if (sa == ATA_32) | |
4212 | return ata_scsi_pass_thru(qc); | |
4213 | ||
b1ffbf85 MI |
4214 | /* unsupported service action */ |
4215 | return 1; | |
4216 | } | |
4217 | ||
1da177e4 LT |
4218 | /** |
4219 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
4220 | * @dev: ATA device | |
4221 | * @cmd: SCSI command opcode to consider | |
4222 | * | |
4223 | * Look up the SCSI command given, and determine whether the | |
4224 | * SCSI command is to be translated or simulated. | |
4225 | * | |
4226 | * RETURNS: | |
4227 | * Pointer to translation function if possible, %NULL if not. | |
4228 | */ | |
4229 | ||
4230 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
4231 | { | |
4232 | switch (cmd) { | |
4233 | case READ_6: | |
4234 | case READ_10: | |
4235 | case READ_16: | |
4236 | ||
4237 | case WRITE_6: | |
4238 | case WRITE_10: | |
4239 | case WRITE_16: | |
4240 | return ata_scsi_rw_xlat; | |
4241 | ||
0cdd6eb7 | 4242 | case WRITE_SAME_16: |
18f0f978 CH |
4243 | return ata_scsi_write_same_xlat; |
4244 | ||
1da177e4 LT |
4245 | case SYNCHRONIZE_CACHE: |
4246 | if (ata_try_flush_cache(dev)) | |
4247 | return ata_scsi_flush_xlat; | |
4248 | break; | |
4249 | ||
4250 | case VERIFY: | |
4251 | case VERIFY_16: | |
4252 | return ata_scsi_verify_xlat; | |
b095518e JG |
4253 | |
4254 | case ATA_12: | |
4255 | case ATA_16: | |
4256 | return ata_scsi_pass_thru; | |
da61396d | 4257 | |
b1ffbf85 MI |
4258 | case VARIABLE_LENGTH_CMD: |
4259 | return ata_scsi_var_len_cdb_xlat; | |
4260 | ||
1b26d29c PB |
4261 | case MODE_SELECT: |
4262 | case MODE_SELECT_10: | |
4263 | return ata_scsi_mode_select_xlat; | |
4264 | break; | |
4265 | ||
28a3fc22 HR |
4266 | case ZBC_IN: |
4267 | return ata_scsi_zbc_in_xlat; | |
4268 | ||
27708a95 HR |
4269 | case ZBC_OUT: |
4270 | return ata_scsi_zbc_out_xlat; | |
4271 | ||
818831c8 CH |
4272 | case SECURITY_PROTOCOL_IN: |
4273 | case SECURITY_PROTOCOL_OUT: | |
4274 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
4275 | break; | |
4276 | return ata_scsi_security_inout_xlat; | |
4277 | ||
972dcafb DG |
4278 | case START_STOP: |
4279 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
4280 | } |
4281 | ||
4282 | return NULL; | |
4283 | } | |
4284 | ||
4285 | /** | |
4286 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg | |
4287 | * @ap: ATA port to which the command was being sent | |
4288 | * @cmd: SCSI command to dump | |
4289 | * | |
4290 | * Prints the contents of a SCSI command via printk(). | |
4291 | */ | |
4292 | ||
4293 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, | |
4294 | struct scsi_cmnd *cmd) | |
4295 | { | |
32a5342a | 4296 | #ifdef ATA_VERBOSE_DEBUG |
1da177e4 | 4297 | struct scsi_device *scsidev = cmd->device; |
1da177e4 | 4298 | |
32a5342a | 4299 | VPRINTK("CDB (%u:%d,%d,%lld) %9ph\n", |
44877b4e | 4300 | ap->print_id, |
1da177e4 | 4301 | scsidev->channel, scsidev->id, scsidev->lun, |
26f58830 | 4302 | cmd->cmnd); |
1da177e4 LT |
4303 | #endif |
4304 | } | |
4305 | ||
542b1444 | 4306 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
2115ea94 | 4307 | struct ata_device *dev) |
eb3f0f9c | 4308 | { |
baf4fdfa ML |
4309 | u8 scsi_op = scmd->cmnd[0]; |
4310 | ata_xlat_func_t xlat_func; | |
2115ea94 TH |
4311 | int rc = 0; |
4312 | ||
9162c657 | 4313 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
baf4fdfa ML |
4314 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
4315 | goto bad_cdb_len; | |
eb3f0f9c | 4316 | |
baf4fdfa ML |
4317 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
4318 | } else { | |
4319 | if (unlikely(!scmd->cmd_len)) | |
4320 | goto bad_cdb_len; | |
4321 | ||
4322 | xlat_func = NULL; | |
4323 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { | |
4324 | /* relay SCSI command to ATAPI device */ | |
607126c2 | 4325 | int len = COMMAND_SIZE(scsi_op); |
058f58e2 EB |
4326 | if (unlikely(len > scmd->cmd_len || |
4327 | len > dev->cdb_len || | |
4328 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
baf4fdfa ML |
4329 | goto bad_cdb_len; |
4330 | ||
4331 | xlat_func = atapi_xlat; | |
4332 | } else { | |
4333 | /* ATA_16 passthru, treat as an ATA command */ | |
4334 | if (unlikely(scmd->cmd_len > 16)) | |
4335 | goto bad_cdb_len; | |
4336 | ||
4337 | xlat_func = ata_get_xlat_func(dev, scsi_op); | |
4338 | } | |
4339 | } | |
4340 | ||
4341 | if (xlat_func) | |
b27dcfb0 | 4342 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
baf4fdfa | 4343 | else |
b27dcfb0 | 4344 | ata_scsi_simulate(dev, scmd); |
2115ea94 TH |
4345 | |
4346 | return rc; | |
baf4fdfa ML |
4347 | |
4348 | bad_cdb_len: | |
4349 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", | |
4350 | scmd->cmd_len, scsi_op, dev->cdb_len); | |
4351 | scmd->result = DID_ERROR << 16; | |
b27dcfb0 | 4352 | scmd->scsi_done(scmd); |
baf4fdfa | 4353 | return 0; |
eb3f0f9c BK |
4354 | } |
4355 | ||
1da177e4 LT |
4356 | /** |
4357 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4358 | * @shost: SCSI host of command to be sent |
1da177e4 | 4359 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4360 | * |
4361 | * In some cases, this function translates SCSI commands into | |
4362 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4363 | * hardware. In other cases, this function simulates a | |
4364 | * SCSI device by evaluating and responding to certain | |
4365 | * SCSI commands. This creates the overall effect of | |
4366 | * ATA and ATAPI devices appearing as SCSI devices. | |
4367 | * | |
4368 | * LOCKING: | |
23e701e6 | 4369 | * ATA host lock |
1da177e4 LT |
4370 | * |
4371 | * RETURNS: | |
2115ea94 TH |
4372 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4373 | * 0 otherwise. | |
1da177e4 | 4374 | */ |
23e701e6 | 4375 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4376 | { |
4377 | struct ata_port *ap; | |
4378 | struct ata_device *dev; | |
4379 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4380 | int rc = 0; |
23e701e6 | 4381 | unsigned long irq_flags; |
1da177e4 | 4382 | |
35bb94b1 | 4383 | ap = ata_shost_to_port(shost); |
005a5a06 | 4384 | |
23e701e6 | 4385 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 LT |
4386 | |
4387 | ata_scsi_dump_cdb(ap, cmd); | |
4388 | ||
4389 | dev = ata_scsi_find_dev(ap, scsidev); | |
eb3f0f9c | 4390 | if (likely(dev)) |
b27dcfb0 | 4391 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4392 | else { |
1da177e4 | 4393 | cmd->result = (DID_BAD_TARGET << 16); |
23e701e6 | 4394 | cmd->scsi_done(cmd); |
1da177e4 LT |
4395 | } |
4396 | ||
23e701e6 JG |
4397 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4398 | ||
2115ea94 | 4399 | return rc; |
1da177e4 LT |
4400 | } |
4401 | ||
4402 | /** | |
4403 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4404 | * @dev: the target device |
1da177e4 | 4405 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4406 | * |
4407 | * Interprets and directly executes a select list of SCSI commands | |
4408 | * that can be handled internally. | |
4409 | * | |
4410 | * LOCKING: | |
cca3974e | 4411 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4412 | */ |
4413 | ||
b27dcfb0 | 4414 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4415 | { |
4416 | struct ata_scsi_args args; | |
057ace5e | 4417 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4418 | u8 tmp8; |
1da177e4 | 4419 | |
9a3dccc4 TH |
4420 | args.dev = dev; |
4421 | args.id = dev->id; | |
1da177e4 | 4422 | args.cmd = cmd; |
1da177e4 LT |
4423 | |
4424 | switch(scsicmd[0]) { | |
2dcb407e | 4425 | case INQUIRY: |
bcfc867d | 4426 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4427 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4428 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4429 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4430 | else switch (scsicmd[2]) { | |
4431 | case 0x00: | |
4432 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4433 | break; |
2dcb407e JG |
4434 | case 0x80: |
4435 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4436 | break; |
2dcb407e JG |
4437 | case 0x83: |
4438 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4439 | break; |
2dcb407e JG |
4440 | case 0x89: |
4441 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4442 | break; | |
18f0f978 CH |
4443 | case 0xb0: |
4444 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4445 | break; | |
1e9dbc92 MW |
4446 | case 0xb1: |
4447 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4448 | break; | |
02e0a604 MP |
4449 | case 0xb2: |
4450 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4451 | break; | |
6d1003ae HR |
4452 | case 0xb6: |
4453 | if (dev->flags & ATA_DFLAG_ZAC) { | |
4454 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); | |
4455 | break; | |
4456 | } | |
4457 | /* Fallthrough */ | |
2dcb407e | 4458 | default: |
8fc6c065 | 4459 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4460 | break; |
2dcb407e JG |
4461 | } |
4462 | break; | |
4463 | ||
4464 | case MODE_SENSE: | |
4465 | case MODE_SENSE_10: | |
4466 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4467 | break; | |
4468 | ||
2dcb407e JG |
4469 | case READ_CAPACITY: |
4470 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4471 | break; | |
4472 | ||
eb846d9f | 4473 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4474 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4475 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4476 | else |
8fc6c065 | 4477 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4478 | break; |
1da177e4 | 4479 | |
2dcb407e JG |
4480 | case REPORT_LUNS: |
4481 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4482 | break; | |
1da177e4 | 4483 | |
2dcb407e | 4484 | case REQUEST_SENSE: |
06dbde5f | 4485 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4486 | cmd->result = (DRIVER_SENSE << 24); |
2dcb407e | 4487 | break; |
1da177e4 | 4488 | |
2dcb407e JG |
4489 | /* if we reach this, then writeback caching is disabled, |
4490 | * turning this into a no-op. | |
4491 | */ | |
4492 | case SYNCHRONIZE_CACHE: | |
4493 | /* fall through */ | |
4494 | ||
4495 | /* no-op's, complete with success */ | |
4496 | case REZERO_UNIT: | |
4497 | case SEEK_6: | |
4498 | case SEEK_10: | |
4499 | case TEST_UNIT_READY: | |
2dcb407e | 4500 | break; |
45394145 | 4501 | |
2dcb407e JG |
4502 | case SEND_DIAGNOSTIC: |
4503 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4504 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4505 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4506 | break; |
1da177e4 | 4507 | |
7b203094 ST |
4508 | case MAINTENANCE_IN: |
4509 | if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES) | |
4510 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); | |
4511 | else | |
8fc6c065 | 4512 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4513 | break; |
4514 | ||
2dcb407e JG |
4515 | /* all other commands */ |
4516 | default: | |
06dbde5f | 4517 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4518 | /* "Invalid command operation code" */ |
2dcb407e | 4519 | break; |
1da177e4 | 4520 | } |
8fc6c065 CH |
4521 | |
4522 | cmd->scsi_done(cmd); | |
1da177e4 LT |
4523 | } |
4524 | ||
f3187195 TH |
4525 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
4526 | { | |
4527 | int i, rc; | |
4528 | ||
4529 | for (i = 0; i < host->n_ports; i++) { | |
4530 | struct ata_port *ap = host->ports[i]; | |
4531 | struct Scsi_Host *shost; | |
4532 | ||
4533 | rc = -ENOMEM; | |
4534 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4535 | if (!shost) | |
4536 | goto err_alloc; | |
4537 | ||
9ee4f393 | 4538 | shost->eh_noresume = 1; |
f3187195 TH |
4539 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4540 | ap->scsi_host = shost; | |
4541 | ||
d9027470 | 4542 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4543 | shost->unique_id = ap->print_id; |
4544 | shost->max_id = 16; | |
4545 | shost->max_lun = 1; | |
4546 | shost->max_channel = 1; | |
b1ffbf85 | 4547 | shost->max_cmd_len = 32; |
f3187195 | 4548 | |
31cc23b3 TH |
4549 | /* Schedule policy is determined by ->qc_defer() |
4550 | * callback and it needs to see every deferred qc. | |
4551 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4552 | * automatically deferring requests. | |
4553 | */ | |
4554 | shost->max_host_blocked = 1; | |
4555 | ||
f8fc75dc LM |
4556 | rc = scsi_add_host_with_dma(ap->scsi_host, |
4557 | &ap->tdev, ap->host->dev); | |
f3187195 TH |
4558 | if (rc) |
4559 | goto err_add; | |
4560 | } | |
4561 | ||
4562 | return 0; | |
4563 | ||
4564 | err_add: | |
4565 | scsi_host_put(host->ports[i]->scsi_host); | |
4566 | err_alloc: | |
4567 | while (--i >= 0) { | |
4568 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4569 | ||
4570 | scsi_remove_host(shost); | |
4571 | scsi_host_put(shost); | |
4572 | } | |
4573 | return rc; | |
4574 | } | |
4575 | ||
1ae46317 | 4576 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4577 | { |
1ae46317 TH |
4578 | int tries = 5; |
4579 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4580 | struct ata_link *link; |
1ae46317 | 4581 | struct ata_device *dev; |
644dd0cc | 4582 | |
1ae46317 | 4583 | repeat: |
1eca4365 TH |
4584 | ata_for_each_link(link, ap, EDGE) { |
4585 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4586 | struct scsi_device *sdev; |
4587 | int channel = 0, id = 0; | |
3edebac4 | 4588 | |
1eca4365 | 4589 | if (dev->sdev) |
41bda9c9 | 4590 | continue; |
3f19ee8c | 4591 | |
41bda9c9 TH |
4592 | if (ata_is_host_link(link)) |
4593 | id = dev->devno; | |
4594 | else | |
4595 | channel = link->pmp; | |
4596 | ||
4597 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4598 | NULL); | |
4599 | if (!IS_ERR(sdev)) { | |
4600 | dev->sdev = sdev; | |
4601 | scsi_device_put(sdev); | |
295124dc GG |
4602 | } else { |
4603 | dev->sdev = NULL; | |
41bda9c9 | 4604 | } |
3edebac4 | 4605 | } |
3f19ee8c | 4606 | } |
1ae46317 TH |
4607 | |
4608 | /* If we scanned while EH was in progress or allocation | |
4609 | * failure occurred, scan would have failed silently. Check | |
4610 | * whether all devices are attached. | |
4611 | */ | |
1eca4365 TH |
4612 | ata_for_each_link(link, ap, EDGE) { |
4613 | ata_for_each_dev(dev, link, ENABLED) { | |
4614 | if (!dev->sdev) | |
41bda9c9 TH |
4615 | goto exit_loop; |
4616 | } | |
1ae46317 | 4617 | } |
41bda9c9 TH |
4618 | exit_loop: |
4619 | if (!link) | |
1ae46317 TH |
4620 | return; |
4621 | ||
4622 | /* we're missing some SCSI devices */ | |
4623 | if (sync) { | |
4624 | /* If caller requested synchrnous scan && we've made | |
4625 | * any progress, sleep briefly and repeat. | |
4626 | */ | |
4627 | if (dev != last_failed_dev) { | |
4628 | msleep(100); | |
4629 | last_failed_dev = dev; | |
4630 | goto repeat; | |
4631 | } | |
4632 | ||
4633 | /* We might be failing to detect boot device, give it | |
4634 | * a few more chances. | |
4635 | */ | |
4636 | if (--tries) { | |
4637 | msleep(100); | |
4638 | goto repeat; | |
4639 | } | |
4640 | ||
a9a79dfe JP |
4641 | ata_port_err(ap, |
4642 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4643 | } |
4644 | ||
ad72cf98 | 4645 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4646 | round_jiffies_relative(HZ)); |
644dd0cc | 4647 | } |
0ea035a3 TH |
4648 | |
4649 | /** | |
4650 | * ata_scsi_offline_dev - offline attached SCSI device | |
4651 | * @dev: ATA device to offline attached SCSI device for | |
4652 | * | |
4653 | * This function is called from ata_eh_hotplug() and responsible | |
4654 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4655 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4656 | * against clearing. |
4657 | * | |
4658 | * LOCKING: | |
cca3974e | 4659 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4660 | * |
4661 | * RETURNS: | |
4662 | * 1 if attached SCSI device exists, 0 otherwise. | |
4663 | */ | |
4664 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4665 | { | |
4666 | if (dev->sdev) { | |
4667 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4668 | return 1; | |
4669 | } | |
4670 | return 0; | |
4671 | } | |
580b2102 TH |
4672 | |
4673 | /** | |
4674 | * ata_scsi_remove_dev - remove attached SCSI device | |
4675 | * @dev: ATA device to remove attached SCSI device for | |
4676 | * | |
4677 | * This function is called from ata_eh_scsi_hotplug() and | |
4678 | * responsible for removing the SCSI device attached to @dev. | |
4679 | * | |
4680 | * LOCKING: | |
4681 | * Kernel thread context (may sleep). | |
4682 | */ | |
4683 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4684 | { | |
9af5c9c9 | 4685 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4686 | struct scsi_device *sdev; |
4687 | unsigned long flags; | |
4688 | ||
4689 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4690 | * state doesn't change underneath us and thus | |
4691 | * scsi_device_get() always succeeds. The mutex locking can | |
4692 | * be removed if there is __scsi_device_get() interface which | |
4693 | * increments reference counts regardless of device state. | |
4694 | */ | |
cca3974e | 4695 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4696 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4697 | |
cca3974e | 4698 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4699 | sdev = dev->sdev; |
4700 | dev->sdev = NULL; | |
4701 | ||
4702 | if (sdev) { | |
4703 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4704 | * away underneath us after the host lock and |
580b2102 TH |
4705 | * scan_mutex are released. Hold onto it. |
4706 | */ | |
4707 | if (scsi_device_get(sdev) == 0) { | |
4708 | /* The following ensures the attached sdev is | |
4709 | * offline on return from ata_scsi_offline_dev() | |
4710 | * regardless it wins or loses the race | |
4711 | * against this function. | |
4712 | */ | |
4713 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4714 | } else { | |
4715 | WARN_ON(1); | |
4716 | sdev = NULL; | |
4717 | } | |
4718 | } | |
4719 | ||
ba6a1308 | 4720 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4721 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4722 | |
4723 | if (sdev) { | |
a9a79dfe JP |
4724 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4725 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4726 | |
4727 | scsi_remove_device(sdev); | |
4728 | scsi_device_put(sdev); | |
4729 | } | |
4730 | } | |
4731 | ||
41bda9c9 TH |
4732 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4733 | { | |
4734 | struct ata_port *ap = link->ap; | |
4735 | struct ata_device *dev; | |
4736 | ||
1eca4365 | 4737 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4738 | unsigned long flags; |
4739 | ||
4740 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4741 | continue; | |
4742 | ||
4743 | spin_lock_irqsave(ap->lock, flags); | |
4744 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4745 | spin_unlock_irqrestore(ap->lock, flags); | |
4746 | ||
f1bc1e4c AL |
4747 | if (zpodd_dev_enabled(dev)) |
4748 | zpodd_exit(dev); | |
4749 | ||
41bda9c9 TH |
4750 | ata_scsi_remove_dev(dev); |
4751 | } | |
4752 | } | |
4753 | ||
2f294968 KCA |
4754 | /** |
4755 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4756 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4757 | * |
4758 | * Tell the block layer to send a media change notification | |
4759 | * event. | |
4760 | * | |
4761 | * LOCKING: | |
854c73a2 | 4762 | * spin_lock_irqsave(host lock) |
2f294968 | 4763 | */ |
854c73a2 | 4764 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4765 | { |
854c73a2 | 4766 | if (dev->sdev) |
f26792d5 JG |
4767 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4768 | GFP_ATOMIC); | |
2f294968 | 4769 | } |
2f294968 | 4770 | |
580b2102 TH |
4771 | /** |
4772 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4773 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4774 | * |
4775 | * Perform SCSI part of hotplug. It's executed from a separate | |
4776 | * workqueue after EH completes. This is necessary because SCSI | |
4777 | * hot plugging requires working EH and hot unplugging is | |
4778 | * synchronized with hot plugging with a mutex. | |
4779 | * | |
4780 | * LOCKING: | |
4781 | * Kernel thread context (may sleep). | |
4782 | */ | |
65f27f38 | 4783 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4784 | { |
65f27f38 DH |
4785 | struct ata_port *ap = |
4786 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4787 | int i; |
580b2102 | 4788 | |
b51e9e5d | 4789 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
580b2102 TH |
4790 | DPRINTK("ENTER/EXIT - unloading\n"); |
4791 | return; | |
4792 | } | |
4793 | ||
85fbd722 TH |
4794 | /* |
4795 | * XXX - UGLY HACK | |
4796 | * | |
4797 | * The block layer suspend/resume path is fundamentally broken due | |
4798 | * to freezable kthreads and workqueue and may deadlock if a block | |
4799 | * device gets removed while resume is in progress. I don't know | |
4800 | * what the solution is short of removing freezable kthreads and | |
4801 | * workqueues altogether. | |
4802 | * | |
4803 | * The following is an ugly hack to avoid kicking off device | |
4804 | * removal while freezer is active. This is a joke but does avoid | |
4805 | * this particular deadlock scenario. | |
4806 | * | |
4807 | * https://bugzilla.kernel.org/show_bug.cgi?id=62801 | |
4808 | * http://marc.info/?l=linux-kernel&m=138695698516487 | |
4809 | */ | |
4810 | #ifdef CONFIG_FREEZER | |
4811 | while (pm_freezing) | |
4812 | msleep(10); | |
4813 | #endif | |
4814 | ||
580b2102 | 4815 | DPRINTK("ENTER\n"); |
ad72cf98 | 4816 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4817 | |
41bda9c9 TH |
4818 | /* Unplug detached devices. We cannot use link iterator here |
4819 | * because PMP links have to be scanned even if PMP is | |
4820 | * currently not attached. Iterate manually. | |
4821 | */ | |
4822 | ata_scsi_handle_link_detach(&ap->link); | |
4823 | if (ap->pmp_link) | |
4824 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4825 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4826 | |
4827 | /* scan for new ones */ | |
1ae46317 | 4828 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4829 | |
ad72cf98 | 4830 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 TH |
4831 | DPRINTK("EXIT\n"); |
4832 | } | |
83c47bcb TH |
4833 | |
4834 | /** | |
4835 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4836 | * @shost: SCSI host to scan | |
4837 | * @channel: Channel to scan | |
4838 | * @id: ID to scan | |
4839 | * @lun: LUN to scan | |
4840 | * | |
4841 | * This function is called when user explicitly requests bus | |
4842 | * scan. Set probe pending flag and invoke EH. | |
4843 | * | |
4844 | * LOCKING: | |
4845 | * SCSI layer (we don't care) | |
4846 | * | |
4847 | * RETURNS: | |
4848 | * Zero. | |
4849 | */ | |
d9027470 | 4850 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4851 | unsigned int id, u64 lun) |
83c47bcb TH |
4852 | { |
4853 | struct ata_port *ap = ata_shost_to_port(shost); | |
4854 | unsigned long flags; | |
41bda9c9 | 4855 | int devno, rc = 0; |
83c47bcb TH |
4856 | |
4857 | if (!ap->ops->error_handler) | |
4858 | return -EOPNOTSUPP; | |
4859 | ||
41bda9c9 | 4860 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4861 | return -EINVAL; |
4862 | ||
071f44b1 | 4863 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4864 | if (channel != SCAN_WILD_CARD && channel) |
4865 | return -EINVAL; | |
4866 | devno = id; | |
4867 | } else { | |
4868 | if (id != SCAN_WILD_CARD && id) | |
4869 | return -EINVAL; | |
4870 | devno = channel; | |
4871 | } | |
4872 | ||
ba6a1308 | 4873 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4874 | |
41bda9c9 TH |
4875 | if (devno == SCAN_WILD_CARD) { |
4876 | struct ata_link *link; | |
4877 | ||
1eca4365 | 4878 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4879 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4880 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4881 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4882 | } |
83c47bcb | 4883 | } else { |
41bda9c9 | 4884 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4885 | |
4886 | if (dev) { | |
41bda9c9 | 4887 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4888 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4889 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4890 | } else |
4891 | rc = -EINVAL; | |
4892 | } | |
4893 | ||
309afcb5 | 4894 | if (rc == 0) { |
83c47bcb | 4895 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4896 | spin_unlock_irqrestore(ap->lock, flags); |
4897 | ata_port_wait_eh(ap); | |
4898 | } else | |
4899 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4900 | |
4901 | return rc; | |
4902 | } | |
3057ac3c | 4903 | |
4904 | /** | |
d0171269 | 4905 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4906 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4907 | * |
d0171269 | 4908 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4909 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4910 | * |
d0171269 TH |
4911 | * LOCKING: |
4912 | * Kernel thread context (may sleep). | |
3057ac3c | 4913 | */ |
65f27f38 | 4914 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4915 | { |
65f27f38 DH |
4916 | struct ata_port *ap = |
4917 | container_of(work, struct ata_port, scsi_rescan_task); | |
41bda9c9 | 4918 | struct ata_link *link; |
f58229f8 | 4919 | struct ata_device *dev; |
f84e7e41 | 4920 | unsigned long flags; |
3057ac3c | 4921 | |
ad72cf98 | 4922 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4923 | spin_lock_irqsave(ap->lock, flags); |
4924 | ||
1eca4365 TH |
4925 | ata_for_each_link(link, ap, EDGE) { |
4926 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4927 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4928 | |
1eca4365 | 4929 | if (!sdev) |
41bda9c9 TH |
4930 | continue; |
4931 | if (scsi_device_get(sdev)) | |
4932 | continue; | |
f84e7e41 | 4933 | |
41bda9c9 TH |
4934 | spin_unlock_irqrestore(ap->lock, flags); |
4935 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4936 | scsi_device_put(sdev); | |
4937 | spin_lock_irqsave(ap->lock, flags); | |
4938 | } | |
3057ac3c | 4939 | } |
f84e7e41 TH |
4940 | |
4941 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4942 | mutex_unlock(&ap->scsi_scan_mutex); |
3057ac3c | 4943 | } |
80289167 BK |
4944 | |
4945 | /** | |
4946 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device | |
4f931374 | 4947 | * @host: ATA host container for all SAS ports |
80289167 | 4948 | * @port_info: Information from low-level host driver |
cca3974e | 4949 | * @shost: SCSI host that the scsi device is attached to |
80289167 BK |
4950 | * |
4951 | * LOCKING: | |
4952 | * PCI/etc. bus probe sem. | |
4953 | * | |
4954 | * RETURNS: | |
4955 | * ata_port pointer on success / NULL on failure. | |
4956 | */ | |
4957 | ||
cca3974e | 4958 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
80289167 | 4959 | struct ata_port_info *port_info, |
cca3974e | 4960 | struct Scsi_Host *shost) |
80289167 | 4961 | { |
f3187195 | 4962 | struct ata_port *ap; |
80289167 | 4963 | |
f3187195 | 4964 | ap = ata_port_alloc(host); |
80289167 BK |
4965 | if (!ap) |
4966 | return NULL; | |
4967 | ||
f3187195 | 4968 | ap->port_no = 0; |
a29b5dad | 4969 | ap->lock = &host->lock; |
f3187195 TH |
4970 | ap->pio_mask = port_info->pio_mask; |
4971 | ap->mwdma_mask = port_info->mwdma_mask; | |
4972 | ap->udma_mask = port_info->udma_mask; | |
4973 | ap->flags |= port_info->flags; | |
4974 | ap->ops = port_info->port_ops; | |
4975 | ap->cbl = ATA_CBL_SATA; | |
4976 | ||
80289167 BK |
4977 | return ap; |
4978 | } | |
4979 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); | |
4980 | ||
4981 | /** | |
4982 | * ata_sas_port_start - Set port up for dma. | |
4983 | * @ap: Port to initialize | |
4984 | * | |
4985 | * Called just after data structures for each port are | |
dde20207 | 4986 | * initialized. |
80289167 BK |
4987 | * |
4988 | * May be used as the port_start() entry in ata_port_operations. | |
4989 | * | |
4990 | * LOCKING: | |
4991 | * Inherited from caller. | |
4992 | */ | |
4993 | int ata_sas_port_start(struct ata_port *ap) | |
4994 | { | |
3f1e046a NA |
4995 | /* |
4996 | * the port is marked as frozen at allocation time, but if we don't | |
4997 | * have new eh, we won't thaw it | |
4998 | */ | |
4999 | if (!ap->ops->error_handler) | |
5000 | ap->pflags &= ~ATA_PFLAG_FROZEN; | |
dde20207 | 5001 | return 0; |
80289167 BK |
5002 | } |
5003 | EXPORT_SYMBOL_GPL(ata_sas_port_start); | |
5004 | ||
5005 | /** | |
5006 | * ata_port_stop - Undo ata_sas_port_start() | |
5007 | * @ap: Port to shut down | |
5008 | * | |
80289167 BK |
5009 | * May be used as the port_stop() entry in ata_port_operations. |
5010 | * | |
5011 | * LOCKING: | |
5012 | * Inherited from caller. | |
5013 | */ | |
5014 | ||
5015 | void ata_sas_port_stop(struct ata_port *ap) | |
5016 | { | |
80289167 BK |
5017 | } |
5018 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); | |
5019 | ||
b2024459 DW |
5020 | /** |
5021 | * ata_sas_async_probe - simply schedule probing and return | |
5022 | * @ap: Port to probe | |
5023 | * | |
5024 | * For batch scheduling of probe for sas attached ata devices, assumes | |
5025 | * the port has already been through ata_sas_port_init() | |
5026 | */ | |
5027 | void ata_sas_async_probe(struct ata_port *ap) | |
9508a66f | 5028 | { |
b2024459 DW |
5029 | __ata_port_probe(ap); |
5030 | } | |
5031 | EXPORT_SYMBOL_GPL(ata_sas_async_probe); | |
9508a66f | 5032 | |
b2024459 DW |
5033 | int ata_sas_sync_probe(struct ata_port *ap) |
5034 | { | |
5035 | return ata_port_probe(ap); | |
9508a66f | 5036 | } |
b2024459 DW |
5037 | EXPORT_SYMBOL_GPL(ata_sas_sync_probe); |
5038 | ||
9508a66f | 5039 | |
80289167 BK |
5040 | /** |
5041 | * ata_sas_port_init - Initialize a SATA device | |
5042 | * @ap: SATA port to initialize | |
5043 | * | |
5044 | * LOCKING: | |
5045 | * PCI/etc. bus probe sem. | |
5046 | * | |
5047 | * RETURNS: | |
5048 | * Zero on success, non-zero on error. | |
5049 | */ | |
5050 | ||
5051 | int ata_sas_port_init(struct ata_port *ap) | |
5052 | { | |
5053 | int rc = ap->ops->port_start(ap); | |
5054 | ||
b2024459 DW |
5055 | if (rc) |
5056 | return rc; | |
5057 | ap->print_id = atomic_inc_return(&ata_print_id); | |
5058 | return 0; | |
80289167 BK |
5059 | } |
5060 | EXPORT_SYMBOL_GPL(ata_sas_port_init); | |
5061 | ||
b6240a4d JY |
5062 | int ata_sas_tport_add(struct device *parent, struct ata_port *ap) |
5063 | { | |
5064 | return ata_tport_add(parent, ap); | |
5065 | } | |
5066 | EXPORT_SYMBOL_GPL(ata_sas_tport_add); | |
5067 | ||
5068 | void ata_sas_tport_delete(struct ata_port *ap) | |
5069 | { | |
5070 | ata_tport_delete(ap); | |
5071 | } | |
5072 | EXPORT_SYMBOL_GPL(ata_sas_tport_delete); | |
5073 | ||
80289167 BK |
5074 | /** |
5075 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc | |
5076 | * @ap: SATA port to destroy | |
5077 | * | |
5078 | */ | |
5079 | ||
5080 | void ata_sas_port_destroy(struct ata_port *ap) | |
5081 | { | |
f0d36efd TH |
5082 | if (ap->ops->port_stop) |
5083 | ap->ops->port_stop(ap); | |
80289167 BK |
5084 | kfree(ap); |
5085 | } | |
5086 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); | |
5087 | ||
5088 | /** | |
5089 | * ata_sas_slave_configure - Default slave_config routine for libata devices | |
5090 | * @sdev: SCSI device to configure | |
5091 | * @ap: ATA port to which SCSI device is attached | |
5092 | * | |
5093 | * RETURNS: | |
5094 | * Zero. | |
5095 | */ | |
5096 | ||
5097 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) | |
5098 | { | |
5099 | ata_scsi_sdev_config(sdev); | |
9af5c9c9 | 5100 | ata_scsi_dev_config(sdev, ap->link.device); |
80289167 BK |
5101 | return 0; |
5102 | } | |
5103 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); | |
5104 | ||
5105 | /** | |
5106 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device | |
5107 | * @cmd: SCSI command to be sent | |
80289167 BK |
5108 | * @ap: ATA port to which the command is being sent |
5109 | * | |
5110 | * RETURNS: | |
08475a19 BK |
5111 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
5112 | * 0 otherwise. | |
80289167 BK |
5113 | */ |
5114 | ||
b27dcfb0 | 5115 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) |
80289167 | 5116 | { |
08475a19 BK |
5117 | int rc = 0; |
5118 | ||
80289167 BK |
5119 | ata_scsi_dump_cdb(ap, cmd); |
5120 | ||
2486fa56 | 5121 | if (likely(ata_dev_enabled(ap->link.device))) |
b27dcfb0 | 5122 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); |
80289167 BK |
5123 | else { |
5124 | cmd->result = (DID_BAD_TARGET << 16); | |
b27dcfb0 | 5125 | cmd->scsi_done(cmd); |
80289167 | 5126 | } |
08475a19 | 5127 | return rc; |
80289167 BK |
5128 | } |
5129 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); | |
98bd4be1 SL |
5130 | |
5131 | int ata_sas_allocate_tag(struct ata_port *ap) | |
5132 | { | |
5133 | unsigned int max_queue = ap->host->n_tags; | |
5134 | unsigned int i, tag; | |
5135 | ||
5136 | for (i = 0, tag = ap->sas_last_tag + 1; i < max_queue; i++, tag++) { | |
3a028243 | 5137 | tag = tag < max_queue ? tag : 0; |
98bd4be1 SL |
5138 | |
5139 | /* the last tag is reserved for internal command. */ | |
2e2cc676 | 5140 | if (ata_tag_internal(tag)) |
98bd4be1 SL |
5141 | continue; |
5142 | ||
5143 | if (!test_and_set_bit(tag, &ap->sas_tag_allocated)) { | |
5144 | ap->sas_last_tag = tag; | |
5145 | return tag; | |
5146 | } | |
5147 | } | |
5148 | return -1; | |
5149 | } | |
5150 | ||
5151 | void ata_sas_free_tag(unsigned int tag, struct ata_port *ap) | |
5152 | { | |
5153 | clear_bit(tag, &ap->sas_tag_allocated); | |
5154 | } |